yosef asked:
What Av Melachah is one violating if he performs kotesh (pounding)?
yosef, Boston, America
The Kollel replies:
Rashi writes that Kotesh is similar to 'Dash' (threshing). This is because its function is to remove the outer kernel of the wheat grains, which is basically what Dash achieves.
be'Virchas Kol Tuv
Eliezer Chrysler.