It's not too much for a family of four to eat ten pounds of oil a month. Edible oil is a necessity of people's life, the main source of energy intake and the main material for making non-staple food. A family of four eats ten Jin of oil a month, with an average of 3.3 Liang of oil a day and three meals a day. One or two taels of oil is used for each meal, with an average of 0.8 taels per person, which is not too much.