How to use the espresso machine to make milk foam? How to adapt to different steam pipes

Milk foam, just say it is useless, want to make a good cup of milk foam, and steam head and milk tank angle, steam head inserted into the liquid level depth, position, and milk temperature, these are related, there is a little change, the milk foam, will have different effects. There will also be some changes in the way you foam milk ~~ This, someone has to give you a model, you have to know, what kind of foam you want, dry, wet, how much foam you want. These are the things you need to think about before you foam your milk, or say, before you make coffee. Because each flower type, technique, the requirements for milk foam are also different. Personal opinion ~~ If you can, find a person who is strong in pulling flowers, learn it well, or practice with a lot of milk, try different angles, depths, temperatures, times, what changes the milk has, what effects. And where, what effect is you want, find it, and remember it. Of course, it is quite expensive to make dozens of jars of milk a day. This can be replaced by other methods. One is to practice with water and a little detergent. Although the effect is completely different from milk, you can find the feeling of making milk through these exercises. There is also water. It is also possible to add a little milk. Nothing much to say, just lots of, lots of practice.