Coffee grinder the difference between flat grinding and cone grinding-hand coffee grinder

Coffee grinder the difference between flat grinding and cone grinding-hand coffee grinder

Effect of powder structure on coffee flavor. This is just the extraction process. The core of the extraction process is the higher extraction rate at the high water temperature and the higher extraction rate at the fine point of grinding. So what is the effect of powder structure on extraction? It's nothing but a water block! Cone knife powder under the microscope, the main body of the powder structure will have many protruding outer fulcrum, just like a hedgehog. After a lot of powder particles gather, it is impossible to match them completely because of the external fulcrum. The gap will be larger and the flow of water will pass faster. The flow of water passes faster, so the extraction is relatively low. Ghost tooth powder, ghost tooth grinding out of the powder waist slender, relatively smooth, the coupling between powder and powder will be better. The gap is also small, the flow of water through will be relatively slow, and the extraction will be relatively more. From the taste, the same beans, the same amount of powder, the same water temperature, the same fineness of powder, ghost teeth will have better sweetness. Flat knife grinding powder, than conical knife protruding fulcrum is less, particles into blocks, waist than ghost teeth to be stout. Personally, I think the water resistance of flat knife powder should be the greatest! Ghost tooth powder waist is too thin, peace knife powder compared to the resistance must be less. Then the powder ground by the flat knife, from the structural point of view, the convex fulcrum of the powder particles is less, so the coupling is much better than the cone knife powder. The gap is tighter than the cone knife, the water resistance is also larger, and the extraction is also a little more.

Fourth, which bean grinder is more suitable? It depends on the beans, assuming your beans are perfect. Then the extraction must be better. What if the beans are mixed and more negative? Then extract less appropriately. Choose the right tools according to the status of the ingredients. The coffee industry has no authority, and diversity is the origin of the world.

The coffee grinder is sometimes more important than the coffee machine, and many players recommend a "sawtooth grinder" because it can grind a uniform coffee powder quickly and steadily. When you choose to buy a grinder, you should pay attention to its power, usually between 70 watts and 150 watts, the higher the better, the higher the power, the faster the grinding speed, and the shorter time the coffee powder stays in the sawtooth, so it can grind the coffee powder at low temperature. The fineness of the ground coffee powder should also be uniform to ensure that the extraction can be uniform in order to make a good coffee.

Sawtooth is also known as ghost tooth, ghost tooth grinding is generally not suitable for grinding very fine powder, so it is only suitable for black coffee. Generally speaking, the coffee machine we are talking about refers to the Italian coffee machine, and the Italian grinding machine is mainly flat knife and cone knife. And grinding is not the faster the better, but to find a balance between the size of the cutter head and the rotation speed to achieve low temperature and uniformity as far as possible.