The price range is huge, and you can spend anywhere from a small fortune to a couple bucks for every type of cuisine. Vegetarians and vegans will find SF a paradise, however contrary to popular belief the city has one of the lowest rates of vegetarian consumers in the nation. Sushi is a local obsession, and though you can find a sushi bar on almost every street corner, the Richmond district has more than its fair share of excellent sushi chefs.

source:[http://indiafoodnetwork.in/food-stories/24-hours-san-francisco-where-what-to-eat/]