how long do i boil crab legs
5. Drop in the crab legs and wait for the boiling liquid to return to a boil. Reduce the heat to medium-high, and let the crab legs boil for 4 to 5 minutes for smaller varieties of crab, 7 to 8 for larger varieties, and up to 15 minutes for colossal.Remove from heat immediately. Remember, you're most likely not cooking them so much as reheating them.educe the heat to medium-high, and let the crab legs boil for 4 to 5 minutes for smaller varieties of crab, 7 to 8 for larger varieties, and up to 15 minutes for colossal. Remove from heat immediately.