[coffee knowledge] coffee powder pressing Italian coffee powder pressing strength of espresso

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Pressing powder

There are all kinds of theories about the strength of powder pressing, 5 pounds, 10 pounds, 20 pounds. Few people know what the devil is, in fact, there is no need to worry about how many pounds of force it takes, just remember to apply the force evenly so that the pressed powder's tight surface is smooth.

If the force is too heavy, the water flow during extraction will be very difficult to pass pressed powder, and it is easy to cause insufficient extraction, while too little force will cause excessive extraction, so the powder pressing strength is not the bigger the better, nor the smaller the better. This needs to be constantly tested and adjusted.

How much force you have to use to feel it, after all, the strength of the powder should be the freest parameter in the gold extraction rule.

The filling strength is between 30 and 40 pounds. If the coffee powder is pressed too hard, it can not let the water permeate. If it is too loose, you can not get the essence of the coffee. In order to master the strength of the filling pressure, it depends on the coarse degree of the coffee powder. If the coffee powder is ground too young, the pressure can be reduced, otherwise, it must be pressurized. The filling strength and the coarse degree of the coffee powder check and balance each other and complement each other. To measure the strength accurately, press the silver part of the attached filler completely down, and then use the attached Razor to measure.