The main ingredient of cake oil is a chemical compound - monoglycerides plus palm oil constituting the emulsifier. Palm oil is a saturated fatty acid oil, which can cause cardiovascular disease in humans when used for a long period of time. In the Western pastry industry, cake oil is mainly used with eggs, flour, water, mixing, made of cake, but also with vegetable oil, water, milk powder together to make the so-called "whipped cream", made of a variety of patterns, coated in the cake surface and sandwich. The price of this additive is also relatively cheap, 10 kilograms of a barrel of the market retail price of about 80 yuan.