This new(ish) Salvadorian/Mexican restaurant on Larkin (at Post) recently replaced the Vietnamese restaurant in the same location. I haven't seen any postings on it yet.
I've tried the Pupusas twice now, and enjoyed them immensely. I'm no expert, but they compare to the ones at Balompie Café on Capp, and they give you a healthy amount of spiced cabbage. You get them with or without rice and beans. I've also had the plantains, which I enjoyed, but I'm not an authority on those either. My friend liked her vegetarian Burrito.
They didn't have a take-away menu when I last went, but I recall burritos, tacos, and an entire page of fish & meat combo plates. They also had about 5 different beers by the bottle.
This restaurant is simple and unassuming, and I've found the chef and staff to be very friendly. The food seems cooked to order. Prices ranged from about $4 to $10.
If you're in the neighborhood, I'd recommend lunch there. The menu is the same for dinner. They were closed on Sunday.
Has anyone else been?