What should be the grinding degree of the positive pressure of the Philharmonic pressure? Introduction to the way of extracting Coffee by Philharmonic pressure

Professional coffee knowledge exchange more coffee bean information please follow the coffee workshop (Wechat official account cafe_style) the editor has previously compared the degree of grinding when using reverse pressure to make love. But we know that Philharmonic pressure can also be cooked by positive pressure in addition to reverse pressure. after all, positive pressure is the officially recommended way to use Philharmonic pressure. So if we use the correct