Generally, any milk can be used to froth milk. Theoretically, the less fat used for frothing milk, the harder the milk froth will be. It is recommended to choose based on personal needs. Simply put, milk foam is the foam formed by milk and air, which is mostly used in coffee making.

Currently, there are three types of milk commonly used for milk frothing on the market, namely fat-free milk, low-fat milk and whole milk. Each type of milk can be divided into different types according to different disinfection methods in the same category. Room temperature milk and low temperature milk.

Under normal circumstances, when the milk temperature is high enough, the fat in the milk will melt into the adhesive of the milk foam, thereby further stabilizing the milk foam. Therefore, although the milk foam made with low-fat and skimmed milk is Firm, but often not as fine as the foam of whole milk.