In addition, instant coffee is indeed not good for the body If it is in the office you can buy a small French press pot (or tea maker) to grind the beans into a relatively coarse coffee powder with more than 90% of the coffee, then the coffee can be ground into the ground coffee. The coffee beans can be ground into a coarse coffee powder and brewed in hot water at 90 degrees for 3 or 4 minutes, then filter out the coffee grounds and drink it! ~