Blue crabs have been a cherished Maryland seafood... well... forever. Blue crabs are used for steamed crabs, and to make crab cakes, crab dip, red crab soup, and cream of crab soup. It all starts with steamed crabs. When I was a child, a dozen jumbo steamed crabs was $12. Today, upwards of $60 to $90. Here's how to cook'em, and eat them.