Lettuce is tender and light green, just like jasper. The dishes can be vegetarian, cold and hot, and the taste is crisp. It also has unique nutritional value. Lettuce for stem is selected from lettuce for leaf after long-term work. The edible part is mainly the flower stem, which is tender and edible. Its stems are as fat as bamboo shoots and tender, so it is also called "lettuce".
For a long time, people always throw away the leaves when eating lettuce. In fact, leaves are more nutritious than stems. Generally speaking, the vitamin content in lettuce leaves is higher than that in stems, and the carotene content in leaves is dozens of times that in stems. Vitamin B 1 is twice as much as that in leaves, vitamin B2 is five times and vitamin C is three times. The content of nicotinic acid in leaves is not only higher than that in stems, but also has good antioxidant effect. In addition, leaves also contain a lot of calcium, which would be a pity if discarded. Data supplement: Every 100g of lettuce stem contains 0.6g of crude fiber, 0.5mg of nicotinic acid, 23mg of calcium and 4mg of vitamin C, while every 100g of lettuce leaf contains crude fiber 1g, 34mg of calcium and 0/3mg of vitamin C. ..