Coffee brewing technology Personal understanding of coffee extraction

1. Slayer pre-soaking system, three-stage extraction theory system 2. The latest concept of grinding and extraction 1. Slayer pre-soaking system + three-stage extraction theory system 1. Double-head boiler system with 1+2+1, i.e. 1 large boiler with steam + hot water +2 small boilers with brewing head. Water used for extracting coffee, independent PID temperature control, 9mm water pipe to ensure uniform water output +1 pre-soaking boiler temperature control