I dropped into La Corneta yesterday for a small (so I thought) snack.
I ended up ordering three tacos, two of which where chicken. I'm normally a pork and beef guy, but I needed bartering material so I could have some of my dining companions tostadas de ceviche.
I'm not a big fan of white meat chicken, and I'm really not a fan of the whole world of Mexican green salsas, but I loved the taco with pollo en salsa verde. The sauce had very deep, lightly smoky, roasted green chile flavor. The small chunks of meat were permeated with flavor, though there was also one large hunk of breast meat that was a bit dry and bland in the center. Try asking for small pieces of chicken only when you order it. It had very little spice but was good nevertheless. After I finished the tacos I scoured my plate for any and all bits of leftover chicken and salsa.
The other chicken, pollo en salsa roja, was not as good. It tasted--and if you've had this experience you'll know what I'm talking about--like it was cooked in salsa that should not have been cooked. Not recommended.
The final taco was carnitas, which had very strong porky flavors but was a bit too moist for my preferences.
The ceviche was pretty good. Plenty of fresh, non-mushy (#1 ceviche flaw), small chunks of white fish with lime juice, tomato, onion, and cilantro. It really needed some chiles--for flavor and heat. But with the slices of fresh avocado and fried yellow corn tortilla base it was pretty tasty.
The tostadas had a thin but respectable layer of ceviche. But the tacos ($1.85 each) were on doubled-up 6" tortillas and were heaped with a TON of meat. I had to eat about 2/3 of the filling with a fork before I could pick them up. The three tacos, two tostadas, large basket of free chips and salsa were more a full meal than lite snack.
On Sunday afternoon the places was packed, mostly with Mexican families. A duo of guitar players were entertaining the crowd.
Mission @ 23rd, San Francisco