By using the stainless steel filter, you can extract coffee oil to brew rich, aromatic coffee. Medium grind to medium-coarse grind is recommended for the coffee beans.
(A guide of 1 cup : 10 g of ground coffee for approximately 150 ml / 5 oz)
After brewing, there may be some fine coffee powders left at the bottom of the carafe. This is a characteristic of the stainless steel filter which allows a direct extraction of the coffee.