655 W 7th St
This recently opened, family-owned, custom burger joint lets you pick your toppings and your buns -- they've got a buttery brioche, a King's-ish sweet bun, an onion roll, and, duh, pretzel, which proves to be a great base for the smoky Big Texas -- a burg layered with applewood-smoked bacon, beer-battered onion rings, and tangy BBQ sauce.
133 N Bandini St
Another multi-generational classic, the 40-plus-year-old Enchilada House is almost a literal hole in the wall, with great versions of traditional Mexican goods -- chiles rellenos, carne asada, etc., etc. -- but they'll also drop some out-there stuff on you, like taquito-ish crispy shell potato tacos, and nachos made from Fritos layered with guac, red chile, and "everything" -- so... more Fritos?