This applies to all the major cities in China. The best food in China comes from the local street vendors or small resturants. They are usually cheap and delicious. Do not go to well established posh looking resturants. My experience usually tells me that they are either too westernised or too unsuited to my taste. However this is my opinion and the choice is yours. But then you didn't go to China to have a ham sandwich or a salad did you?