How to adjust the coffee bean grinding scale How to use which is better

How to adjust the coffee bean grinding scale, how to use which is better?

Roughness can control bitterness is a good way to control bitterness, because the finer the grinding, the higher the extraction rate, the easier it is to extract high molecular weight astringent bitter substances such as chlorogenic acid, quinic acid, caffeine and carbides. On the contrary, if the grinding is too rough, the lower the extraction rate is, the more difficult it is to extract the astringent bitter substance with high molecular weight, but the sweet taste with middle molecular weight may remain in the coffee grounds because of insufficient extraction, which is a waste. The scale is not immutable. Do not use the same grinding scale for playing coffee. If you know that the density and baking degree of each bean are different, the required scale will not be the same. The scale of very hard beans or shallow roasting can be slightly adjusted to be finer, and the deep roasting can be adjusted thicker. If you think a bean tastes bitter and salty on scale # 3, this is excessive extraction, which can be adjusted to # 3.5 or # 4, which will significantly improve the bad taste spectrum, and vice versa. In addition, the bean grinder should be diligent in maintenance, regularly remove the knife head and remove the grease dirt inside. The knife head is consumable, and it will be dull every 800 to 1000 pounds. Remember to replace it, otherwise the grinding particles will be half-thick, which will cause uneven extraction and damage the good flavor of coffee.

Determine the direction of adjustment you need (finer or thicker). Make sure there are enough coffee beans in the warehouse, and the valve between the warehouse and the sharpening knife is opened so that the coffee beans can fall smoothly into the grinding area.

Turn on the grinder for 10 seconds and discard the coffee powder (these are coffee powders that have not been adjusted).

Use the coffee powder to make a cup of coffee to ensure the accuracy of the steps of serving, flattening and pressing powder. Test the quality of the coffee and the extraction time. Constantly adjust the dial to make the powder reach a perfect thickness.

Debugging of electronic bean grinder

Different bean grinders have different adjustment dials, so you should check the model of the coffee grinder and read the instructions carefully to determine the direction and strength of the dial. In general, if you keep in the habit of checking the settings of the bean grinder, you only need to make very small adjustments. As long as you move the turntable within 3 mm, you can change the thickness of the powder. Although 3 mm is a very small number, the grinding time of the same coffee beans will change for 3-5 seconds to observe the coffee powder. High-quality coffee powder should be powdery and gravel. If the coffee powder is soft, like flour, it means the powder is fine. On the contrary, if the coffee powder feels tough and rough, it means the powder is too coarse. When the coffee bean enters the grinder, the blade in the grinder will crush the coffee bean into powder.