The density of cooking oil is usually between 0.91 grams per milliliter and 0.93 grams per milliliter at room temperature. It refers to animal or vegetable fats and oils used in the production of food, and is liquid at room temperature. Edible vegetable oil has four fears, one is afraid of direct light, two are afraid of air, three are afraid of high temperature, four are afraid of water, in the preservation of edible oil needs to be sealed to avoid light and waterproof and low temperature.