Simple electric coffee magic bean machine contact bad how to do?

Simple electric coffee magic bean machine contact bad how to do?

The bean grinder compares l. Manual bean grinder advantages: decorative, suitable for family use disadvantages: slow speed and easy to produce friction heat. It takes a lot of time, and it's quite hard to use it. two。 Household propeller electric bean grinder advantages: small light fast disadvantages: propeller grinding beans, is to cut off coffee beans, easy to lead to coffee beans of different sizes. 3. Household grinding disc type electric grinder advantages: compact, portable and fast disadvantages: can not be continuous for a long time, easy to heat, motor and fuselage heat resistance is poor. The common bean grinders on the market are propeller type and gear type l. Propeller advantages: low price disadvantages: 1. Because the beans are "chopped" into particles, the size of the ground powder is uneven, and the worn particles are lumpy. This irregular coffee powder is not easy to extract evenly. two。 Its grinding efficiency is very poor, and the long grinding and the high heat motor below will heat the beans while stirring, destroying the fragrant coffee oil. two。 Advantages of the gear bean grinder: because the beans are "torn", the coffee powder with very fine and uniform size can be erased, and it is a porous irregular particle with strong cake crumbs under the microscope, which can be extracted evenly by hot water. And the general gear type bean grinder is more advanced, reflected in the price and technology, gear type is the use of the gap between gears to adjust grinding, grinding is more average, grinding temperature is lower, can ensure to retain the original flavor of coffee.

The grinding process of each cup of coffee usually takes a few seconds to more than ten seconds. According to the fineness of the grinding powder required by different brewing methods, the grinding machine grinds each coffee bean into a coffee powder with a diameter of about 3500-3500 and a diameter of about 0.05-0.7mm.

When extracting such a large number of coffee particles, the effect of uniformity on the product is extremely critical.

What is extraction? The definition of extraction itself refers to a process of substance exchange between coffee powder and water.

Put aside what we often say, "if you don't grind evenly, you can't make coffee well." from a more macro point of view.

The taste of a cup of coffee is originally a combination of thousands of coffee granule extracts.

When the fluctuation value of grinding thickness is large, most of the particles can not reach the uniform degree we want.

As a result, under the same extraction conditions, the coarser coffee particles are more likely to be underextracted, while the finer particles are overextracted in advance.

Therefore, the larger the grinding span of coffee powder is, the more turbid and irritating smell can be tasted.

On the other hand, coffee powder with basically the same size and similar shape is used for extraction.

The taste becomes brighter and stronger, and the performance of flavor characteristics is clearer and consistent.

In Italian concentrated extraction, whether the degree of grinding is uniform or not not only affects the taste of the product, but also determines the success of Italian coffee.