Elizabeth C.
Yelp
El Progreso, more commonly known as "prison taco" due to its proximity to the rather striking federal penitentiary across the street, has been on my to-try list for over a year now. Their hours might not be the *most* reliable, as they closed early the first time I tried to eat there, but all you have to do is call ahead. Parking is also super easy and free.
Now that I've finally been to prison taco, I know I'll be coming back frequently. The tacos have everything you need--great meat, cilantro, onion, lime juice, and beautiful salsas on perfect corn tortillas--and nothing you don't. Currently, most tacos are 2.89, and the lengua are 3.99. They have items on their menu other than tacos, but the tacos are the star.
If you have a vegetarian along with you, they do make veggie tacos (rice, beans, lettuce, and cheese) along with veggie versions of some of their other items. It's not on the posted menu, but if you ask they'll gladly make it for you.
I tried the al pastor and the lengua--two of each--which was plenty of food, as the tacos are piled high with meat. There is definitely spillage, so don't be afraid to get messy. The lengua is without a doubt the best lengua I've ever had. So tender and juicy on the inside, and perfectly crispy on the outside of each piece. If you're a bit skeptical about eating tongue, try the lengua here, and you'll be converted. I can also see why the al pastor is popular here! And al pastor is usually my favorite, however the lengua here is SO good that it honestly outshines the al pastor. Both are so good though and I can't wait to come back and try their other tacos.
My vegetarian dinner buddy really liked their veggie tacos, too!