Abstract: A method of dividing deep-frozen food blocks comprising forming a succession of spaced parallel blade rows each row having a plurality of spaced parallel coaxial freely rotatable discoid blades and advancing successive food blocks past the successive blade rows so that the blades in the successive blade rows rotate with a peripheral speed which more or less matches the speed of the block advance so that there is minimal relative linear motion of the blade edges and the blocks whereby the blades groove the blocks by displacing block material to the sides of the grooves and selecting a number of blade rows such that while the grooves made by any blade row are quite shallow, the grooves made by all of the blade rows divide each of the blocks into a plurality of parts. Apparatus for practicing the method is also disclosed.