The sun sets on a hot summer day in Crisfield, Maryland — the crab capital of the world. You're out to dinner at a seafood restaurant, and you order a steaming plate of real, mouthwatering crab legs.

Crab, whether prepared live, pre-cooked, or frozen, is a tasty delicacy. The fact that most of the animal is edible makes it extra-accessible for home cooking. Once you learn all about buying, ...