Medium fineness grinding coffee powder-how to control fineness by open circuit grinding

Medium fineness grinding coffee powder-how to control fineness by open circuit grinding

For example, Espress coffee, which grinds deeply roasted beans and uses an espresso machine to extract a small amount of coffee liquid in a short period of time, will get coffee with a strong bitter taste. What happens when the same coffee powder is extracted by drip filtration? If you do it, you can see that the filter paper will be blocked by coffee powder, making it difficult for the injected hot water to pass through, and the extraction time will be lengthened, which will eventually lead to excessive extraction.

So, will the coffee powder with ultra-coarse grind be better?

The above problem is also a matter of degree. If the grinding is too rough, the hot water will easily pass through the filter paper, and the delicious ingredients of coffee can not be fully extracted. In this way, the coffee from the coffee pot becomes a light, thin liquid.

Each coffee utensil has its own suitable degree of grinding, so we don't use whatever degree of grinding we want. As mentioned above, the coffee powder is too coarse or too fine to make coffee, that is to say, the most suitable grinding degree is medium to medium roughness.

The following is the relationship between the grinding degree of coffee powder and the extraction method:

1. Suitable for fineness grinding: Turkish copper pot, mocha pot, espresso machine.

2. Suitable for medium grinding: filter paper dripping filter, flannel dripping, plug air kettle (also known as siphon kettle).

3. Suitable for roughness grinding: dripping coffee machine, dripping filter pot.