Different grinding methods have different tastes. The finer the grinding, the more bitter components are released.
Rough grinding:
Dropping quickly → boiling to produce a clean taste without peculiar smell.
If the coffee powder is coarsely ground, the injected hot water will drip quickly, and the taste and aroma components cannot be fully extracted. However, the foreign flavor will not be completely released, and the finished coffee is transparent, refreshing, soft and sour.
Fine grinding:
Slowly drip → Although the bitter taste is fully released, it is easy to have a miscellaneous taste if it is ground too finely.
Coffee powder has the function of filter layer, and coffee components can be fully extracted. The finished coffee is rich and mellow. However, if the coffee powder is too fine, the ingredients will be over-extracted, which is easy to produce bitterness.
When the powder thickness is uneven:
The dripping speed is different → not only delicious, but also miscellaneous.
If the thickness of coffee powder is uneven, the extracted components will be released irregularly. The concentration of sour and bitter components in the finished coffee is uneven, which becomes a kind of taste with disharmony between light and heavy tastes.
Grinding to a uniform and moderate thickness;
The secret of brewing delicious coffee is mainly to extract various components of beans moderately. The finer the coffee beans are ground, the larger the surface area of the coffee beans and the more components are extracted, but the bitterness of the coffee will also become heavier. On the contrary, the coarser the coffee beans are ground, the lighter the coffee concentration will be, the less the bitterness will be, and the more obvious the acidity will be. Moreover, if powder particles are mixed, the dissolved ingredients will be chaotic and uneven, and the taste of the brewed coffee may become disharmonious. It is important not only to adjust the thickness of coffee powder, but also to grind it evenly. If coffee produces micro-powder during grinding, it often has astringent taste, so the key to choosing a bean grinder is to choose a machine that will not produce micro-powder and will not produce friction heat that will destroy the taste and aroma.
Four points of the best grinding method * Grinding the thickness suitable for extraction method.
* The thickness of coffee powder is even.
* No fine powder particles.
* does not produce friction heat.