How to do Espresso full-bit Analysis-how to drink Starbucks espresso
How to do Espresso full-bit Analysis-how to drink Starbucks espresso
The extraction of esp has high pressure, so it is necessary to use enough fine powder. In the fine premise as far as possible uniform, so that the coffee pressed powder under the same pressure to get uniform extraction.
This requires a bean grinder with good performance. The Italian bean grinder is mainly divided into two kinds of cutter head-parallel cutter head and conical cutter head. The advantage of parallel cutter head is that it can ensure the uniformity of grinding.
The powder produced by the tapered cutter head is composed of particles of different sizes, since the coffee powder is uniform, why use the conical cutter head? Because the cone knife grinding uses a low-speed high-torque motor, the grinding is fast and not easy to heat, so the advantage of the cone knife is more obvious when grinding a large number of coffee powder.
In addition, some people think that although the cone knife grinding powder is not uniform, it can lead to more levels of flavor, while others say that uneven is easy to lead to miscellaneous smell, so the cone knife itself is a more controversial type, different opinions.
Personally, I am not a pure supporter of conical knives or flat knives. If it is for personal use or does not need a lot of grinding, the calorific value can be ignored. Then I will recommend the flat knife bean grinder, stable, uniform grinding is the premise to ensure quality.
If it is a commercial place for grinding a large number of powder, you should choose a cone knife bean grinder with a faster grinding speed and not easy to heat. According to the domestic coffee market, it is wise to use parallel cutters as the mainstream.
Grinding knives are mostly made of high hardness alloy steel. nowadays, some manufacturers offer ceramic or titanium alloy cutterheads, which are not easy to produce high heat, while titanium alloy has more durable properties and can be upgraded according to their own needs.
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