The fire lasted for 3-4 minutes. Plum beans, also known as lentils, are also called gas beans in some areas in the north. It can be cooked in 3-4 minutes when frying, because in order to ensure the taste of plum beans before frying, it will be blanched in boiling water for 2 minutes. In the process of frying, in fact, the plum beans are half-cooked, and the heat is fierce enough. The wok heats up very quickly, and the food enters the wok quickly. Thus affecting the taste of plum beans, so plum beans can be cooked in 3~4 minutes.