Dad, cows in food stalls like vegetarianism, so they eat green peppers. The formula of fried beef with potato in Laodie food stall = beef+green pepper+potato+salt+oil. Pay attention to adding green peppers to make potatoes and stir-fried beef. Cooking method: after the pan is cleaned, put oil, add green pepper, beef and potatoes, stir fry, and control the yellow progress bar. Add salt after frying, and then fry for a while to cook successfully.