Grinding has a great influence on the flavor of coffee. Can we investigate the grinding degree in the form of "numbers"?
Does the main factor affecting coffee flavor really come from grinding degree?
If you want to learn coffee, the first step you can't avoid is Italian concentrate (Espresso) extraction. We have heard that a perfect Espresso should have rich aroma, satisfactory body, clean and balanced taste and so on.
We have also heard that in order to make a perfect Espresso, we need to consider a series of variables, such as grinding degree, powder quantity, number of milliliters, extraction pressure, water temperature, extraction time, powder pressure and so on.
The flavor of coffee is extracted in the order of sour, sweet, bitter and astringent. This means that by controlling the degree of extraction, you can control the amount of each substance being extracted, in other words, you can determine the taste of the coffee.
This is the basic goal of creating a brewing formula, whether it's Espresso or brewing coffee. The degree of grinding is one of the keys.
The thickness of the coffee beans determines how quickly the substance in the coffee can dissolve into the water. Because, for the same beans, the contact area between coffee powder and water under fine grinding is larger than that under rough grinding.
For example, white sugar dissolves faster than granulated sugar, and fine coffee powder dissolves faster than coarse coffee powder, so grindness is one of the biggest factors affecting the flavor of coffee brewing. At the same time, the larger the surface area of coffee powder in contact with water, the more flavor substances will be extracted. The degree of grinding is a powerful tool that can affect the flavor of coffee in complex ways. Mastering the effect of the degree of grinding on the extraction in the form of "quantity" will be difficult to find the right degree of grinding, but to test, taste, and record each change, changing only one variable at a time until you get a cup of delicious coffee that is satisfactory enough.
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