What are the big leaves used for cooking in general hotels?

Lettuce (lettuce variety Lamosa Holt. [1] is a common name for leaf lettuce, also known as goose feather lettuce, Brussels sprouts and lettuce, belonging to the genus Lettuce in Compositae. It is an annual or biennial herb crop with long obovate leaves and dense cabbage shape, which can be eaten raw, crisp and slightly sweet.

Lettuce is native to the Mediterranean coast of Europe and domesticated from wild varieties. The ancient Greeks and Romans ate it first.

Lettuce has been introduced into China for a long time, and it is widely planted in the southeast coast, especially in the suburbs of big cities and Guangdong and Guangxi. In recent years, the planting area has expanded rapidly, and lettuce has also entered the dining table of ordinary people from hotels and restaurants.