Uncle J.
Yelp
Full disclosure: I've only been once, it was a weird off lunch hour and we ended up eating what are probably not considered menu staples, but it was definitely enough to form an opinion.
What stood out the most is that you can tell they care about the food they're putting out, even for typical breakfast foods. That probably sounds cliche, but both the Palace Diner and the Porthole are serving similar breakfast offerings and anyone that has been to both will tell you there's a major difference (I still love you, Porthole, just for certain things). The OSD had much more in common with Palace and I guess people would say they are "elevating" basic breakfast foods. That care has always been evident at their delis and other pop-up events when they've had a food stall.
Anyhow, brass tacks. My girlfriend had the corned beef hash with the hash brown that has the sausage inside, and me, being the cheap bastard I am, couldn't resist happy hour snacks so I had their half-mezze plate and some Greek fries. The fries came out first and I am a lunatic for potato anything and these were excellent. Crispy outside, pillow-y inside, the Greek seasoning and feta was just right and not overwhelming. Mezze platter was also awesome and the half size they were serving at happy hour was still very much a shareable size. Stuffed grape leaves, hard boiled egg with a still runny yolk inside (I'm sure there's a classier name for this), stuffed grape leaves hummus, pita, pickled onions and some tomatoes and that oh so delicious halloumi. I would have loved even more halloumi, but I know that was probably the most expensive ingredient on the plate by a large margin. The sharing of mezze made me feel better about stealing parts of my gf's brunch lunch, and the corned beef hash was really good. It almost tasted like there was some juniper in there, which separated it from most others in the area. The hash brown sausage ball wasn't teeming with sausage, so don't expect that, but by virtue of them rolling hash browns into this little deep-fried ball, you get the crunchy, crispy outside and the soft inside. Again, potato game on point.
The prices were totally fine, especially with the level of food. You're not getting dirt cheap diner prices, but $14 for that hash, or $12-13 for other main dishes didn't seem bad at all. Staff was incredibly nice and well informed on the menu offerings.
I can't speak to how busy this place is on a normal weekend. The location has always been a weird one for me and a bit out of the way, but if that means I can can get (almost) Palace Diner level food without waiting for an hour outside, then so be it!