American coffee is different from LongBlack and Lungo. What coffee beans are good for American coffee?

Today we are going to talk about American style, American style and American style. In many people's concept, the American style is nothing more than a mixture of Espresso and water. Yes, that's right, but you probably don't know that the so-called American style actually has three different approaches. And some baristas and consumers argue about whether to add water first or later.