Basic knowledge of fine coffee What is milk foam?

For coffee, Chinese people may prefer to drink fancy coffee because the taste is not so strong, but for some fancy coffee, many people may not know how to make it. Foaming is the product of a fine mixture of milk and air. Foaming is made by pumping air into milk. The principle is simple, but it is not a simple matter to really make a cup of dense and detailed milk foam. The most common problem is that too much air enters the milk, creating too thick hard milk foam, which floats on the surface and cannot be fully mixed with coffee, so you don't enjoy the fine texture of milk foam and coffee when drinking. It is recommended that you use a steam milk frother to make milk foam, which will make the process easier.