Recommendation - San Jose, Fremont, San Francisco
Too broad a request. Please narrow down price range (how inexpensive), location, desired quality, types of food excluded, # of people in party.
For example, with a quick yelp search, I would recommend the El Grullense on Woodside Rd in RWC. You can eat well for under $10/pp with a house margarita. However, I suspect you're not looking for someplace THAT cheap and simple.