1. Because there may be pesticide and fertilizer residues, be sure to wash them before eating them raw;

2. It is extremely sensitive to ethylene and should be stored away from apples, pears and bananas to avoid brown spots;

3. Whether it is fried lettuce or boiled lettuce, the time should not be too long, so as to maintain the crisp taste of lettuce;

4. Lettuce torn into pieces by hand will be more brittle than a knife;

5. Wash lettuce, add appropriate amount of salad dressing and eat directly. A regular diet can help women stay slim.