There’s the fore shank (front leg) and the hind shank (back leg). They’re like siblings: similar, but with quirks. The fore shank is slightly more tender because the front legs carry less weight than the rears. The hind shank? That’s the powerhouse—think of it as the cow’s squat-day champion.
Both are ringed with a thick, silvery skin called the epimysium. It’s basically natural wrapping paper that melts into rich gelatin when you cook it slowly. Gelatin equals gooey, luxurious sauce. Yum.