The first step in the transformation of coffee into a shot of espresso occurs in the coffee grinder. Its cleanliness is essential for an excellent in-cup result: the hopper and the doser should be free of any greasy residue. Cleaning the grinder from ground coffee residues every 2-3 days ensures perfect grinding and consistent coffee particle size. The grinder’s bodywork also deserves specific attention, using products that clean and hygienise it.