Complex sentence: It gets its name because of the "silverwall" on the side of the cut; this is a long fibrous "skin" of connective tissue, which has to be removed as it is too tough to eat.
Split into simpler sentences: It gets its name because of the "silverwall" on the side of the cut. This is a long fibrous "skin" of connective tissue, which has to be removed for it is too tough to eat.