Crab legs are pre-cooked and will be boiled, grilled, steamed, or baked. Reheat our King Crab legs by introducing two cups of water and 1 tablespoon of salt to your pot and bringing it into a boil.Complete Alaskan king crab ships the same as king crab legs would. The full crab is totally cooked and flash frozen when pulled out of your h2o. The supp