When setting out to boil crab, some like to flavor the water with traditional crab-boil spices, while others prefer the simple addition of wine, a bay leaf, a lemon wedge, and a clove or two of garlic. We have our own way-a mixture of flat beer, vinegar, and a bit of pickle juice, seasoned with mustard, paprika, salt, pepper, and a touch of garlic. Pile the crabs into a steamer in a large pot and let the liquid bubble for about 30 minutes. When the crabs turn bright red, youβre ready to start cracking shells.