What role does milk play in coffee? Eshenjia analyzes the composition of milk coffee

A cup of delicious coffee, Ai Shen Jia believes that it is closely related to the use of milk. Some people like the original American coffee, while others prefer the foamy milk coffee. Let's talk about what role milk plays in fancy coffee?

No matter how complex, colorful, or delicious a drink is, if you break it down, it can basically be divided into four parts: base, main ingredients, auxiliary ingredients, and topping. Different from the singleness of black coffee, its rich layers are its unique feature.

If the base determines the structure of the drink, then milk is the key factor in the expression of flavor. It can be used as both the main ingredient and the topping, and its role in a cup of coffee is extremely important. Generally, the base of coffee is made of espresso, which is the most common espresso in daily life.

The reason why milk can blend well with other bases and become a delicious and good-looking topping is mainly due to the three elements of milk: lactose, milk fat and protein.

Lactose is the source of the sweetness of milk. It is tasteless when cooled. Only when lactose is heated and becomes water-soluble can it release sugars and increase sweetness.

The existence of milk fat is equivalent to the common whole milk and low-fat milk on the market. In fact, the taste of whole milk combined with coffee, tea, etc. is richer, sweeter and more delicious. At the same time, the milk with a higher fat content has a better foam density.

Protein is the key to the formation of milk foam. Milk with high protein and fat content will have a creamy taste. When milk is heated, it changes from a sol state to a gel state, forming a thin film that surrounds air molecules and forms a floating substance, namely milk foam.

A good cup of milk coffee does not actually require additional sugar, because fresh milk already contains natural lactose. The combination of lactose and coffee fat will amplify the natural sweetness.

Unsugared latte actually puts less burden on the human body, but if you feel it is not sweet enough, or want to change the taste and order a mocha or caramel macchiato, you have to carefully choose what kind of sugar to add to the cup.

If you are at home, you can enjoy the fragrant, smooth, refreshing and nutritious milk coffee with half a cup of coffee and half a cup of milk. If you want to make the same flavor as in a coffee shop, you might as well start by choosing the milk.