Backslash Burger (Formerly Fifty Fifty)

This was my first time at Fifty Fifty and the food was excellent. My boyfriend got the Petey Piper and I got the build your own burger. The portion size was great. I really appreciated that we weren’t charged for condiments and toppings for the burgers. One of the things that has bothered me about burger spots is that you pay a ridiculous price for the burger and then you have to pay an additional surcharge to get the toppings. Thankfully that’s not Fifty Fifty. The concept of a burger being 50% beef and 50% bacon seemed a little crazy until I tasted it, and I realize that it’s the most genius thing. I couldn’t believe how great it tastes. We also got onion rings and the banana pudding ice cream sandwich. I am in love with that ice cream sandwich. I wanted to get more, but I bought the last one. I highly recommend this place. If you need a great burger, a cool spot to hang out, and food at a reasonable price. I plan on coming back here again soon.

Backlash Burger is by far one of the best burgers I have ever had. Everything was absolutely amazing. The burger was cooked perfectly and packed with flavor, and the fries had the perfect amount of seasoning — crispy, hot, and addictive. We paired it with a Bon Voyage light beer from Old Mother Brewing Company, and it was so smooth and delicious it complemented the food perfectly. Honestly, I can’t rave about this place enough. Part of me wants to keep it a secret, but it’s just too good not to share. Now I completely understand why they have a 5.0 rating — it’s 100% deserved. I’ll definitely be back.

Wow!! This place is amazing. We grabbed some drinks from Olde Mother and had burgers at 50/50. We had the Oklahoma Animal and two ‘build your own’ burgers. Absolutely delicious. Fries were hot and crunchy, burgers were juicy and hearty. Highly recommend!

Interesting concept. 50% beef 50% bacon. You can taste the 50% bacon. I would almost say it’s too much bacon. Now don’t get me wrong. It was still delicious and would recommend a stop. But not your typical burger. Reminds me of an elevated 5 guys. Got the build your own and Oklahoma animal and sweet potato fries.

Located in a local brewery , their burgers are so good i had chicken and my husband had beef, they were delicious.One of the best hamburgers in frederick.Their old bay fries are must try .Fresh and tasty food .Whenever we crave for burger in Frederick we just stop by all the time.

I can’t believe we’ve never been here before. Suppose is such Hidden gem. We came hungry and left full and satisfied. Start our order off crispy onion rings, and the best seasoned Old Bay that I’ve ever had. I got the old-fashioned burger and added candied jalapeños, which were surprisingly very tasty and not too spicy. I think the key to the burgers are there half bacon and half ground beef, which takes the taste of the next level. We arrive right at lunchtime and we were the only people in here for a while before the lunch rush came in, but don’t worry there is plenty of indoor and outdoor seating.

Really enjoyed our first visit here. Really good bacon/beef burgers. Had the make-your-own, Waffle burger, and chicken sandwich. Everyone was happy with their meal. Canned drinks? But fine, lots of take out orders. Onion rings were just standard, but the burgers were excellent. Really liked the atmosphere. Very old school American bar/pub/grill. Worth the money for sure.

Location is tucked behind olde mother brewery. Can be accessed directly through the bar (back left) or directly through an alleyway to the left of the above mentioned building. Ordering can be done through a self checkout kiosk. You will get notified via text when your order is ready. Got the onion rings extra crispy, and they were some of the best I've had. The rings held together well, and didn't have the issue of the onion falling out the ring on the first bite. The sauce has a slight spice which is nice. I had the "I can't feel my face" and it was good. I would recommend saving "that" burger till the last, as the heat will persist throughout the duration of your meal. The sauce was flavorful, unlike some pepper extract sauces. Like other ghost peppers, the spice was not immediately apparant, but crept up and lingered. The form factor was great in that the bun absorbed the sauce so you do not have the problem of sauce getting on your hands like you do with wings. I would recommend getting extra napkins as they not available on the tables. I had to be a bit tactical on which ones contained sauce and which were "clean" There is a fountain drink machine which was much appreciated (especially considering my burger choice). Helpful, so you do not need to be reliant on the neighboring bar.

Nice little hidden gem! The place was a little hard to find but I was looking for a stand alone restaurant with a big sign out front. It is attached to a brewery with a side entrance. The staff were friendly all the way around, inside the taproom and restaurant. I liked my burger but my kiddos didn't. Overall I will come back and try some of the other burgers on the menu. Also I need to check the taproom next time. I definitely recommend this place if you're a burger person.

This is my second time having an Oklahoma Animal Burger with fries. Washed it down with a pint from Olde Mother Brewery. The 1/2 beef 1/2 Bacon smash burger is quickly becoming my favorite. This is one of the best burgers I've had in this area. Definitely a must try . 2 separate businesses but attached. We ordered our burger at the kiosk counter then went to Olde Mother Brewery for a drink. Got a quick text and went back to grab my food. Casual vibe, fast service.

Thursday 9/25/25 I was recommended this spot by a good friend of mine who had a lot of good to say about it, so I was definitely interested. The big draw about this burger spot is that their burger patties are 50% beef & 50% bacon, hence the "fifty-fifty" name. The restaurant is located in a shared space with another building, so make sure to go to the back to find it. Service was quick & easy, as I just picked up my food with no issues. I made a DoorDash order for pickup and got the BOGO FREE (DoorDash deal) fifty fifty build-your-own $15.33, the Belgian bird $15.19, and the Old Bay fries $5.90. - The FIFTY-FIFTY (BUILD YOUR OWN) was an underwhelming experience for me. I like how you can taste the 50% bacon portion of the patty, but besides that, the burger itself is passable, as alright. For some reason, my burger was soggy and wet, which was disappointing. I think it's a solid option for a fast food burger, but it's nothing impressive or noteworthy. - The BELGIAN BIRD doesn't necessarily look very impressive in person, but I was surprised that it ended up exceeding my expectations and becoming my favorite item. The chicken patty isn't anything special, but the waffle & ingredients deliver sweet & hot flavors that pair nicely together. I don't know if the waffle was infused with syrup while also being sprinkled lightly with sugar, but it didn't even need syrup to be good, which is a great thing. This was decent, a 7.4/10 rating. - The OLD BAY FRIES were slightly above average. They have some Old Bay seasoning on them, which is different, but the texture and taste of the fries weren't crispy or fresh to me. - I had three of the sauces and ranked best to worst would be: fifty-fifty sauce, bourbon molasses, and BBQ sauce. Wasn't a fan of their BBQ sauce, but the other 2 were solid choices. Overall, I'd grade it as a fast-food spot with a bit more expensive prices. I think it's solid for a quick bite, but it's nothing impressive to me or noteworthy for me to come back, but that's just me. -- For more FOOD content, check out @issa.cheatday on Instagram & TikTok!

We stopped at Fifty Fifty for lunch today. The food was fresh, delicious, and made from good quality ingredients. I ordered the Fifty Fifty lunch special for $10. This included the original Fifty Fifty burger with fries. We placed our orders through the kiosks, so no human to place an order through. But the food was made to order and we received our orders pretty quickly. The ambiance is very casual. It's colocated with Olde Mother Brewery next door. Theres lots of indoor seating and some outdoor seating. It's fairly easy to get to with street parking. I definitely would recommend coming here for a great local burger experience.

Burger was half bacon half ground beef unique flavor not bad. They drowned our burgers in the sauces that came on them while I'm glad it was plentiful it was a bit excessive and caused the bread to be really soggy. Everything was fresh and made to order. It's a great vibe for sure and relaxed. I definitely would go back for their events like trivia night etc. Service was nice as well. The bartender was cool and made our drinks really strong and flavorful.

My wife and I went on Labor Day and Fifty-fifty definitely caught us by surprise. The place was very clean and spacious. The weather was amazing so we were able to sit outside and just enjoy the space. You order at a kiosk, which was fine with me. Otherwise the food came out very quickly. Now for the food, this place has one of the best burgers I've ever had. The burgers were extremely juicy and flavorful. Although it had sauce it wasn't drowned in it, but the patty absorbed it well. I also really enjoyed the old bay fries, could always use more, but definitely delicious. Will be coming back again to add a beer to my order.

Cute and fun little place. Actually, it's not so little. It is attached to the Olde Mother Brewing. There is also a small outdoor section. You have to place an order at the kiosks which is not my favorite thing to do. I would prefer human interaction. We ordered old bay fries which was a little too salty. The onion rings (extra crispy) were delicious. I liked my burger with all the toppings while my friend thought his burger was a little too salty. Maybe all the toppings I had cut the saltiness. It was overall a fun adventure.

I cannot believe I didn't review Fifty Fifty immediately after my first visit. Must of been the food coma; it was that good. Went with a bunch of the boys from the hood. Burger menu looked really good (and who doesn't love a 50% beef/50% bacon burger?). I went for the "I Can't Feel My Face" burger (topped with candied Serrano peppers and ghost pepper sauce) on the side. Menu claims the combination clocks in at around 3 million Scoville units - and I'm here to tell you they do not lie. I'm a fan of hot stuff, but thank heavens the sauce was served on the side. Fifty Fifty has more than excellent burgers. They also have outstanding onion rings - crunchy and spicy exterior, pillow soft interior. Ahhhhhhhhh, now if they only had beer to wash things down. Oh wait, they do! Fifty Fifty share space with Olde Mother Brewing which offers a wide variety of freshly brewed beers. I paired my burger with a Na Zdraví - a Czech-style Dark Lager with a 5.5% ABV. Smooth drinking and fire quenching. Overall experience was outstanding. Can't wait to return with my Spousal Unit!

As we walked in, we noticed the really cool ambiance, with a laid back, street vibe. The kind of place to come with friends, but was great for our family to have lunch too. We ordered a Peter Piper, it was delicious (my favorite of everything we ordered)! The pickled cherry peppers were spicy, but not too much so it gave it the perfect kick to go with the sweetness of the bourbon molasses. My son had the Ogre burger which was HUGe, but he said was really good. We also had an Old Fashioned, which was really juicy and flavorful and a kids menu which included fries, a juice box, the burger and a burger gummy. It was so large and customizable. My daughter loved it. Regarding service, we ordered everything through the kiosk, so we didn't actually deal with people, but everything was quick, smooth. The sweet potato fries with blueberry sauce were delish and the regular fries had a lot and delicious seasoning. We fully recommend this place!

Burger was really good other than it was cold. I had my phone on table and did not know they would notify by text since they took my name. Food sat on there front counter for 11 minutes without me knowing it was ready. I went to check on meal and it was sitting there in a bag with my name on it. Burger was good just cold since it say there for so long. The fries were good to other than they sat there for 11 minutes. What's sad is I gave them an $8 dollar tip in advance hoping to get good service. Instead it was the opposite. A local came in after me and they greeted him and even joked with him. We did not get a hi or anything when we came to the front counter. Just wish we had a better experience.

I had the PBPB&BB & Sweet Potato Fries with their blueberry ketchup. This place is amazing! The food is quite delectable. I ate most of my burger before it occurred to me I should share this wonderful place with the world. Don't miss it if you like a quality burger with fun and deliciously unusual toppings.

We visited for Father's Day lunch! Wait time was a little bit longer because the restaurant was Pat. We all three build our own burgers. I added onion ring in mine, and my husband ordered his with baking. The smash burgers are the best in town and the fries are delicious with obey seasoning. We highly recommend this place.

Great place. This place is split with half bar/half restaurant with seatings for a variety of group sizes. The staff are quick and always on the move. I got my food in a relatively quick time. I ordered on their ipad but they also had a counter where you can order face-to-face. I got two burgers and fries for takeout, the ogre and a make your own. Both were really good and full of flavor. The Fries were seasoned well. The prices were a little high but the size and flavor made up for it. It was messy to eat it but all in all I would recommend and would get it again

LOVE THE FOOD HERE. Was looking for a place like this so I would not have to cook and there is nothing negative to say. I will definitely be returning.

Best burger we have had in years. Attached to a brewery. We were so happy we decided to eat there. You don't be disappointed!

We entered through Olde Mother Brewing, but they were so nice and directed us to the right place! Ordering was super easy at the kiosks with LOTS of options. The lunch special is perfection, the burgers are "bussin'" according to my kiddo. Old Bay fries were great, but could be overwhelming if you're not an OB person. The sauce was SO good, easy and friendly service, cool, large seating area and very chill. It was a quiet weekday so we parked on the street at a meter. Bring quarters. This place was exactly what we wanted.

Fifty Fifty is one of the best places to get smash burgers. You can order on the toast tab app and choose to either create your own smash burger or choose one of their specialty smash burgers. I customized my smash burger with jalapeños, sautéed onions, lettuce, and cheese. If you are a spice lover like me, I highly recommend you try their ghost pepper sauce. It was incredibly spicy, but so flavorful. Fifty Fifty is a casual burger joint that has a brewery attached to it where you can enjoy beers as well. The service is pretty much self-serve, where you can order via the app or their self kiosk and wait till you're notified that your order is ready.

Reallyyyyyy not a fan of the pickles. There was a short period of time when they had dill pickles but apparently that was a fluke. Deters me from ordering a burger period because the pickles they have are not good. The other thing is that they do not accommodate plant based burgers for kids meals. My niece really wanted a plant based burger & tots but they insisted they do not do that & it was an up charge to accommodate. Many children I know are vegetarian/vegan!

One of the best smash burgers I've ever had! Goes great with Olde Mother's beer on tap! Got the Old Bay fries and they were delicious but a bit overly seasoned and very salty - probably go with the regular fries next time. Definitely recommend and will come here again and again!

The food her was actually great- we tried a bunch of things and they were all good. Service was mixed- 2 waitstaff- one carried the load while the other chatted with friends and took care of regulars. Luckily the server NOT assigned our table noticed and took care of us- draft not super cold but I would definitely go back. Place was a bit loud and active due to a pub crawl- it's crowded because it should be-

The food is amazing! The old bay fries were great! Everyone was super nice too! The restaurant is in a large room, but they had fun seating for everyone!

Sorry no pictures because I destroyed that burger. Mrs and our four year old stopped here for lunch. We've been looking for an another good burger place. We remembered having 50/50 at a food truck and it was fantastic. The restaurant didn't disappoint, we got the Ogre burger, She's my cherry burger and some standard Dino nuggets . Really good quality meats and fries. Make sure you get some 50/50 sauce for those fries. We'll definitely be back 10/10.

Solid place for hamburgers (half beef/half bacon), served on delicious Martins potato rolls. One of the cooks was friendly, answering all my questions about the menu, although he was busy. My wife's onion rings were also very good. The only downers were the fries ... they were over cooked and very salty (too much Old Bay) and the lack of fountain sodas was also a downer.

Delicious burger. Of course because it's 50% bacon it's gonna be a little greasy. Not my #1 burger but still very good. And you can't go wrong grabbing a local brew and a burger.

I finally made it out to fifty fifty after many attempts over the past year. Coming into it, I had very high expectations of this establishment as it comes very highly recommended. The customer service is a bit non-existent, but that is okay for this type of place. When you arrive there is a self-service kiosk for you to order and it has all of the options on it that you can think of. I ordered a build your own with an order of their onion rings. One cool thing about the kiosk is that the order and status goes straight to your phone via text message. This is important because if you wonder over to the brewery side to order a drink you don't have to worry about missing your food. The food was hot and fresh (everything is made to order). I'm also a big fan of the potato roll for the bun. Their burgers and half bacon and half beef. With that. The burger to me was very underwhelming. I expected a nice crust on the smashed patties (none and just cooked to barely temp) and it lacked a lot of flavor. The onion rings were very good and seasoned well as they were piping hot. Overall, it's a good place to eat but not quite as advertised for me. There are better burgers in Frederick. The inside is very nice and open with plenty of indoor and outdoor seating. Also, if you want ketchup they give you on little container with a lid on it about half full).

Yummy food and relaxed atmosphere. Would recommend to other as a good smash burger place

I ordered the Ogre burger. The burger party itself wasn't what I expected. I was more expecting a thick juicy smash burger, but instead it was thin and wasn't really juicy. The description said there was tiger sauce but I didn't see or taste any. The bottom bun was also very soggy. Overall, I wasn't that impressed with the burger. We also ordered the old bay fries and there was way too much old bay on them and they were very salty. The service was decent. The men making the burgers were fast and helpful. I like how Toast system texts you and lets you know when your food is ready. I liked how it was intertwined with the brewery. Burgers and beer for the win! You do have to order them separately though, but that's ok! Plenty of seating and there's outdoor tables and chairs too.

Lord almighty this truck knows how to make a mean burger. This is one of the best burgers I have ever had in my life definitely in the top three best burgers I've ever had. I would have never thought this combination would work out on a burger, but it blew my mind! The service is fast, it's a good truck lol. Great people run this truck, smiles, jokes, they just looked they were having a good time. Writing this review and looking at this burger, makes me want to go back to Frederick and order it again! I mean come on it's a burger with peanut butter look at it! it's a masterpiece. The quality of these burgers speak for themselves. Make sure you follow them on Instagram to figure out where the truck is going to be next. Fifty Fifty 10 out of 10! #eatfiftyfifty

Top 3 best burger in Frederick! This spot is tied for number 1 in my very humble opinion. My family and I have been here 3 times now, and we've all had an opportunity to try different variations of their burgers. It is located inside of Olde Mother Brewery, which is a plus if you also enjoy having a beer with your meal! The burger patties are made with beef AND bacon! Hence, the name Fifty Fifty. Need I say more?! The last time I came I tried the Ogre which was SO good. It was nice and juicy and just right. Also ordered a side of onion rings and OMG they were perfectly fried and crispy. The vibe is very casual inside. What you'd expect of a brewery. It's good to bring your kids, go with a friend, or even on a date! The seating in the back, near Fifty Fifty and by the stage, is picnic bench style seating. I don't have much to say about the service as you place your order through a tablet and just wait for your food to be ready at the counter. There isn't much interaction with the folks working, but we've never had a bad experience with them thus far. If you're looking for a great burger, look no further and give this place a try!

Was quite excited to try some burgers at fifty fifty. My selections were the default 50/50 beef and bacon burger and the default chicken sandwich. The burger patties were thin and dry but the buns were fresh. The chicken burger was more of cornmeal type crust which meant it was hard / crunchy instead of crispy. I prefer juicy burgers in general. The option to select multiple different toppings was a bonus, but unfortunately I was underwhelmed by the burgers. I did have a wheat beer from old mother which shares the space. The beer was refreshing.

So, the Fifty Fifty crew has a food truck. It made its way to our little food truck alley (the last two weeks). 1. The burgers are amazing, and the options and quality are high. Okay, they do include sweet pickles, which I am not a huge fan of, but everything else is perfect. Burger quality (it's 1/2 and 1/2) is amazing. The burgers are made in the smash style, so they mix the crispy edge with a flatter burger. Often, burgers cooked in this style end up dry, but not from 50/50! 2. oh, the fries (and the chipotle dipping sauce). Oh my. I am a fry guy, and Fifty Fifty does a great job with their old bay Fries. Overall an amazing burger, which is sort of well nice!

Consistently one of the best burgers I've ever had. You order on a screen, fries are separate. The fries are amazing too. It's around $18 maybe for fries and burger, give or take, but 100% worth it. Cannot recommend this place more.

10/10 loved the food! Although the fries could be a little less seasoned but that was my fault, should've asked for less seasoning. Other than that everything was amazing!

I am a vegetarian (not vegan) and really enjoyed the plant-based smash burger. You can build your own (many toppings are free), or have any of the menu combos but with the plant burger instead. I had the one with sour cherry jam and herbed goat cheese. So good! My only complaint is that they use the absolute cheapest buns you can find (like Walmart 8 pack). It would really elevate the experience if they upgraded the bun. Easy to order online or on their computerized menu in person, easy to carry out or eat there or in the brewery.

Fifty fifty has smash style burgers that are really good as well as chicken options. I really like the I can't feel my face burger. The chicken for me was ok. Crispy but not quite enough flavor. Their beef is definitely the better choice. Their fries and onion rings are also solid. My only complaint is I do wish they had an alternative to the bacon mixed into the ground beef. Some people don't eat pork, so maybe a turkey bacon or even just beef would be nice. Because they are attached to old mother brewing you get the second hand benefit of the brewery ambiance. The service is quick, and their staff is really nice. In the summer they have featured desserts from local spots that are always really tasty. A great place to grab a bite and beer after work.

Awesome burgers. Hands down one of, if not THE, best burger places in town. Great prices, quick service.

Very good burgers, I fact they could be the best in DTF or Downtown Frederick. However they lack a little in the service department. They say they'll shout out your name when your order is ready. They don't! Or if they do then maybe Horton could hear them, we couldn't. Not a major thing, but it would be nice. Thankfully lots of beer to help you get your thirst up beforehand.

Fifty fifty does it again!! Tried their seasonal peaches burger and like always, it slaps. Such a unique flavor profile but definitely works. My favorite "Peter Piper" burger is top 5 burgers of all time...do yourself a favor if you haven't already. Oh and their old bay fries are great, would recommend the sweet potato fries w blueberry ketchup with the sweet peaches burger.

This is THE best burger spot in Maryland. Every time I'm in Frederick it's like I have to eat here.

Very good burgers made with a mix up of beef and bacon. Thin, juicy, and crispy on the outside. The flavor is there! They have some unusual concoctions as well. Mine had cherry preserves and an herbed goat cheese, it was delicious! There is even a hot burger made with ghost peppers that you have to sign a waiver for. Hubby is dieting so he got a chicken sandwhich, said it was average. But you don't come to a burger joint to get an award winning chicken sandwich! The space is very open with two rooms and some outside dining. It's situated inside an operating brewery so you see the large barrels. It is a little on the dark side, which I struggle with. You order at the bar or counter and pick up when your name is called. Never heard my name but walked up and my order was there. I will say I do think it was expensive for what it was and did leave hungry. The burgers run $13-$14, and come with nothing, not even chips. They use a potato roll as a bun which got soft/messy really quickly and is on the smaller side - I do feel a broiche roll would do it better justice. Street parking was easy to secure within a block's walk. I would come again.

I do not give reviews often, but i had to go out of my way to give this 5 stars. Hands down best burger I've ever had. Service was also amazing and my family's food was ready in 10 minutes. We will be coming back for sure! 10/10 recommendation

The burgers are amazing! They're probably my favorite smash burgers I've had. It's a little on the pricey side, but I feel it's totally worth it. I always go here when I'm in town!

We really enjoyed our burgers, old bay fries, and onion rings. We have been talking about the burgers since we had them a couple days ago. The sides are great, but unless you are starving, big enough to share. You won't regret dropping by to enjoy the best burger I've had in a long time.

Oh dang this place is so good. The chicken sandwich sent me to my happy place. Didn't have to wait too long and everyone was friendly. Had tried their food truck before but enjoyed their spot in Old Mother Brewing a lot. We will be back!

Delicious burgers in Frederick! Fast service and full of flavor, definitely recommended for a visit. The vibe is also super chill and relaxed. Went there with an infant and a kiddo and 3 adults and had ample seating.

Just had an I can't feel my face burger. It had a very good flavor. And yes it was spicy but not as bad as you would think. I would definitely recommend this food truck. Check out the online menu. A lot of different burgers to choose from. I would post a link on here , I'm not in charge of making sure you see it. LOL!!

These folks know what they're doing. For my dime, the best burger in Frederick County. just fantastic!

This was hard to find at first but so worth the hunt! Craving a burger this past saturday had to search high and low for a new spot. Found this place on Instagram and they did not disappoint. First of all located inside a brewery in downtown frederick; beer and a burger what a combo! I ordered the old fashioned and it was more of a salty and a bit sweet concoction but i loved each second of it. Freshly made in their open kitchen and the two ladies there were very helpful in breaking down the menu for us. They even had cute merchandise to buy to support! The menu was extremely organized and plenty of indoor seating. Outdoor seating available as well but it was a little cold. Go with the old fashioned or the ogre!

Burgers were DELICIOUS. One of the best I've had in ages. Fries were also quite good. Good portion size for the price, a lot of options, and the service was fantastic. Food was prepared in just a few minutes. Will absolutely come again.