Nine problems that need to be paid attention to in how to make good milk foam in coffee machine

One: [steam requirements] the use of steam to get rid of foam combined with the rapid production of ESPRESSO, it is precisely because of these two points that espresso coffee can be popular all over the world in a short time. So what kind of steam do we usually have for the foam? the stable amount of steam in ① is the most important point, and the large and small steam is often just that you can't beat the foam.