One knife flow, three steps, stirring method, and some injection methods, volcanic impact, meteorite impact, Kono impact, zigzag impact, three warmth and so on. Hand-made schools are so diverse, but there is only one purpose. While getting a unique cup of good coffee, there is no lack of fun in experiments. Making a delicious cup of hand-brewed coffee at home is actually very simple. Master some tricks and keys, and you can also get a delicious cup of hand-brewed coffee.