How to buy coffee beans How to process coffee beans machine map and price

How to process coffee beans bought by hand grinder complete picture and price

1. When grinding with a manual bean grinder, do not grind too much at one time, just enough for one time. The longer the bean grinder is used at a time, the easier it is to get hot, which indirectly causes the aroma of coffee beans to be released ahead of time due to heating in the process of grinding, which will affect the aroma of coffee after cooking.

2. in the process of grinding, do not rotate too fast, but gently rotate so that the grinding core does not produce friction heat as far as possible.

3. After each use, there is a drawer outside the bean grinder that can be wiped with a wet cloth. The movement does not need to be cleaned, but a special brush is used. If it is not used for a long time, just pour out a little coffee powder in front of it the next time you use it.

When it comes to the grinder, the core part is the cutter head. The cutterhead is also divided into many kinds, mainly ceramic and metal. Ceramics produce less heat when grinding, will not rust, can be washed, but more fragile. Metal and cast iron and alloy, contrary to the ceramic cutter head, the blade is sharp, but high heat production, it is best not to wash. But on the whole, if you only grind a small amount of beans for family use, the fever is negligible.

The uniformity of grinding is the most important thing to judge the quality of the grinder. uneven grinding will cause uneven extraction in the follow-up, often some parts of coffee powder have not been fully extracted, while some parts have been excessively extracted. finally, the whole cup of coffee has a bad smell. One of the most common problems is that fine powder will be produced during rough grinding, resulting in bitter coffee. Although there will be fine powder phenomenon in even the best grinder, the phenomenon of fine powder in some low-end bean grinders will be especially obvious.

The heat generated during grinding as mentioned in the previous article, the aromatic substances in coffee powder are very volatile, and the heat during grinding will accelerate this volatilization. A good grinder can control the heat within a certain range by reasonable torque. However, if people drink their own coffee at home, they only grind a small amount of beans, and the effect of fever is negligible.

Needless to say about the grinding speed, the more time-saving and labor-saving, the better. However, it should be noted that some low-end grinders simply increase the speed to improve efficiency, which will cause a large amount of heat as mentioned in the second point. A good bean grinder generally achieves the balance of heat production and efficiency through low speed and high torque.