Sauce is a liquid or semi-liquid mixture, which can be added directly to food or during cooking. Sauce can keep food moist, increase taste and change color and appearance. It is also used as a material to wrap the appearance of food, such as white sauce with cream chicken. Liquid condiments such as soy sauce, Chili oil, fish sauce and spicy soy sauce can be used as cooking and table condiments. Many sauces are made of batter and boiled for a few minutes. Fruit thick soup can also be called sauce, and apple sauce, cranberry sauce, plum sauce and rhubarb sauce can all be used as seasonings for fat meat. Dessert sauces include boiled custard, chocolate sauce (usually made of cream, cream and sugar) and fruit sauce. Fruit jam is usually mixed with fruit or juice, sugar, spices and wine. The boiled water jam is thickened with corn flour or Ge Fen to make it delicate and transparent. All kinds of sweet sauces are boiled with cream and sugar until the sugar just turns into caramel.