Coffee grinder: coffee bean grinding skills, basic knowledge of coffee grinding and brewing

The ideal time for coffee grinding is to grind it before cooking. Because ground coffee is easy to oxidize and lose its flavor, especially without proper storage, coffee powder is also easy to change flavor, so it is naturally impossible to cook mellow coffee. Do people who don't know how hard it is to grind coffee? In the era of full automation, the pursuit of perfection is becoming more and more urgent.