The coffee grinder is surely the most important piece among your tools to prepare a good coffee. Everyone knows that to preserve the aromas the coffee has to be ground immediately before preparing. What is not known of many people is the importance of homogeneity of coffee for the extraction and this is achieved only with a very good coffee grinder. The possibility of adjusting the grinding system according to the type of coffee that we are going to prepare is very important for the extraction process. It does not matter if we make coffee at home or in a coffee shop the coffee grinder is very important.