Tools/materials: green beans, clear water, cooking pot, colander.

1, first add a proper amount of water to the pot to boil.

2. Then add the green beans and blanch them for about two minutes.

3, after fishing out, you can use cold water.

Tips for picking green beans

1, look at the color. When you buy green beans, you should first look at their colors. The green beans that are tender are generally green. If you see the green beans are white, don't buy them. They are not very fresh.

2. Choose tender pods. When purchasing tender pods, the ones with green pods, smooth and hairless skin, large and generous pods are of good quality. Don't buy green beans whose pods turn yellowish brown and hard to eat.

3. Select dry seeds. When purchasing dry seeds, pay attention to the fact that high-quality dry seeds have no moth-eaten, smooth and full epidermis, pink or purplish red, flat oval, and dark brown umbilicus. Fresh dry seeds are easy to cook crisp, and they are sandy and waxy.