1、 What is it

Lettuce is also called lettuce. It is a vegetable of the genus lettuce in the composite family. It can be eaten raw, fried and rinsed. It is an annual or biennial crop, which is rich in nutrients, so it is better to eat more at ordinary times. The origin of lettuce is the coastal area of Europe and the Mediterranean. It was first eaten by the Romans and ancient Greeks. It also has a long history in China, and the cultivated area is gradually expanding in recent years

2、 Is it cold food

Lettuce belongs to cold consumption and is an alkaline food. Therefore, the amount of lettuce should not be too large each time. It is best to eat it in an appropriate amount. In addition, there are many ways to eat it. You can eat it raw directly, fry it with minced garlic, rinse it when you rinse the pot, and cold mix is also better

3、 Characteristic habit

1. Features: the leaves of lettuce are not divided, oval or oblanceolate, the leaf length is 6-15CM, and the position of the edge is wavy or serrated

2. Habit: it likes to grow in a cold environment. It is not only not resistant to heat, but also not resistant to cold. The suitable growth temperature is 15-20 ℃. If the curing period is high for a long time, its growth will become worse, and the taste will be very bitter. If fertile soil is used in cultivation, its yield will be higher