Buffet is a dining method originated from Western food. The chef will display the prepared cold and hot dishes and snacks on the long table in the restaurant, and guests can eat and serve themselves. This form of dining originated from the "Scandinavian cold meals" and "Hunt breakfast" in Northern Europe from the 8th to the 11th century AD. Buffet, sometimes called a buffet, is a kind of informal Western-style banquet popular internationally, which is especially common in large-scale business activities. Its specific practice is that no formal meal is prepared, and the diners are left to choose their own food and drinks during the meal, and then stand or sit down to eat freely with others or alone. The reason why a buffet is called a buffet is mainly because it can mobilize the subjective initiative of the diners during the meal, and they can do it themselves, help themselves, and arrange and select dishes within the established range. As for the fact that it is also called a buffet, it is mainly because the food provided is mainly cold food. Of course, it is also allowed to provide some hot dishes in moderation, or to provide some semi-finished products for diners to process themselves.