Detailed illustration of the video tutorial on how to make foam in a coffee machine.

Detailed illustration of the video tutorial on how to make foam in a coffee machine.

There is usually a special flower cup or kettle, as well as an electric milking machine, but the Italian coffee machine is equipped with a steam sprinkler, which can be used for foam beating.

No matter what equipment is used to make milk foam, but we should pay attention to the bubble should not be too large, should be uniform and delicate. The time should not be too long, and the time of milking with different instruments is also different. Milking is a very practical work, and you can grasp the time and strength by using the same tool several times.

The first step is to understand the correct operation process of the coffee machine steam system, understand the purpose of the empty steam pipe before and after foam, and understand the importance of towels and easy cleaning in coffee making.

The second step is to learn how to use the sprinkler to touch the milk surface, the location and depth of the selected point.

Step 3 recognize the two temperatures. One is the starting and ending temperature of foaming, and the other is the temperature at which the milk foam is made. These two temperatures are very important for beginners, which is directly related to the mastery of the principle of foam. First of all, when it comes to foaming, the milk is cold at first (preferably refrigerated at 5 ℃), which can prolong the foaming time so that it can be fully foamed and delicate, and then open the steam valve to foam the milk. When foaming is consistent with our body temperature (feel neither hot nor cold), the foaming is cut off. Because our hand temperature is about 30 degrees, so I personally think that the temperature of milk foam should be between 65 and 70 degrees. Because if it is too hot, it will destroy the nutritional value of milk.

Next, let's talk about the temperature at the end of milking. In fact, there are many theoretical theories about this temperature, but it is not detailed here. We will talk about the feeling when we discuss the flavor of liquid milk in the future. I just want to talk about what the temperature feels like on the hand. When we feel this temperature with our hands (in continuous heating), it is hot, but we can stand it for two or three seconds; as soon as we feel warm, we stop heating (the back end of the heating feels very hot on the hand, but it can hold it).

In some places, thermometers are used to measure. I think this kind of teaching method is not good. Technology is something that people need to understand attentively, and it is not very good for people to improve their own skills with the help of external forces.