20/20 Romantic Dinner for 2

Step 4: Clean and Break Up the Crab

Break the legs and claws off the crab; break the shell up with the back of a knife or a cleaver.
From the back of the shell, lift the top shell off the rest of the body.  Scoop out and dispose all the gooey bits, as well as the ridgy bits on the top sides of the body (the lungs).  Quarter the body.