I have modelled my grind after that of a pre ground Lavazza Qualita Rossa. That is the most popular domestic coffee in Italy, and I am sure the Bialetti designers made sure that this grind would work well with the Brikka. The grind is finer than drip coffee, but not as fine as espresso grind. (I use a Zassenhaus hand grinder which works fine) -- and yes it is a wonderful pragmatic device.