In Britain, the most famous foods are fish and chips. Fish and chips are a popular take-away food. It includes fish, which is mashed, fried and served with potato chips. Sometimes it is accompanied by other foods, such as pea paste or tartar sauce. In British French fries shops, traditionally, fish and chips are served with salt and vinegar. A mushy pea is a popular side dish. In table service restaurants and bars, this dish is usually served with a slice of lemon, which is used to squeeze on fish. There is no sauce or seasoning, and salt, vinegar and sauce can be provided by customers at will.