Table 3 and 4 summarize concentrations of aroma compounds obtained from the various grinding methods. Comparissons between wet and dry grinding methods are illustrated in Figure 2. The wet grinding methods were compared to the dry grinding methods with as similar particle size distributions as possible. The coffee obtained from wet grinding with the corundum stone mill were compared to dry ground coffees from the Ditting mill. The wet ground coffees obtains from the laboratory blender were compared to the dry ground coffees from the same laboratory blender or, for investigations on the hot extraction of cold wet and drygound coffee, from mill. However, as seen earlier, the fine fraction obtained from wet grinding could not be reproduced in dry grinding of coffee.