Condensed milk is a kind of milk product, which is a beverage made of fresh milk or goat milk after disinfection and concentration. Its characteristic is that it can be stored for a long time. It is usually made by vacuum concentration or other methods to remove most of the water from fresh milk, concentrating it to about 25% ~ 40% of the original volume of dairy products, and then adding 40% of sucrose to cans. Its color is uniform milky white or yellowish, shiny and has the inherent taste and smell of condensed milk.