The mortar shall undertake a sufficient size to regrind for small quantities. The surface roughness of the inner shell is ideal for grinding of grains, nuts, herbs etc. The mortar has, due to the weight and size, good stability. However, you should use an anti-skid pad for smooth work surface. Pestle sits comfortably in the hand and allows a fine grinding degree. The finer the grind to be, the less ground material should be ground at a time in the mortar.