wash the crabs, being careful not to let them grab you! place half of them in a pot WITH A VERY TIGHT FITTING LID. pour water, white vinegar and salt over the top. fit as many crabs as you can. steam them (and no, they dont scream) for about 20-30 minutes. throw the cooked crabs into the gravy for about 15 minutes (it will flavor the gravy). and eat!
we always had these with pasta.
and lots of napkins.