The young leaves of lettuce are very good food, it contains nutrition even richer than the rhizome of lettuce, and lettuce leaves production process is also very simple, delicious flavor, and also suitable for cold eat. Just a lot of people feel that lettuce leaves have a bitter taste, so they do not love to eat.
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Lettuce:
Alias stem lettuce, lettuce shoots, green shoots, lettuce. Production period: January-April. Lettuce originated on the Mediterranean coast and was introduced to China around the fifth century. Aboveground stems are edible, with white-green skin and crispy stem flesh; young stems are bright green and turn white-green when mature. The fleshy young stems are mainly eaten, and can be eaten raw, cold, fried, dried or pickled, and the young leaves can also be eaten.
The stem and leaves contain lettucin, containing lettucin (C11H14O4 or C22H36O7). It is bitter in flavor and has analgesic effect. Lettuce is highly adaptable, can be cultivated in spring and fall or overwintering, with spring cultivation and summer harvest.
Reference:
Baidu Encyclopedia of Lettuce