1, add water in batches: if the green beans are not rotten can be added in batches, the green beans can be slowly cooked and will not paste the pot.

2, thermal expansion and contraction: green beans can not be cooked can be soaked in hot water before cooking green beans, and then fish out the green beans and put them into cold water to cook it is easy to cook.

3, pressure cooker cooking: cooking green beans using a pressure cooker is better, but with a pressure cooker to cook green beans should also pay attention to the use of safety.