Yummy Dimsum , which is right next to the Bank of American ATM on Stockton (930 Stockton), is not a fancy place. But from the kitchen they serve a lot of different dimsum, and has steam table of about a dozen different entress for your lunchbox needs. They even have porridge and wonton noodles, but you have to know how to order, as it's very rarely visited by tourists. While the quality of the items isn't the greatest, nor the freshest, locals keep coming back, just not in large numbers. Their lunch boxes (3 entrees and rice) is $7, and most dimsum are $3 for one order (usually 3 pieces) with occasional exceptions (like beef balls are $4). They also have rice porridge in the rice cooker behind them, and their kitchen can also make you beef stew noodles, wonton noodles, and such by ordering off the menu on the wall. They do have a few small tables but they are VERY tight. Personally, the portions of those entrees are on the smaller side, but that is probably just my fee...
An exploration of San Francisco Chinatown typically NOT covered by tours