If you’re using frozen crab (totally okay, no judgment here!), add about 2–3 extra minutes to the boil. Frozen meat needs a little more love to reach that flaky perfection. But never thaw first—go straight from freezer to boiling water. It’s faster and keeps the flavor locked in like a treasure chest.
For pre-cooked frozen crab legs, you’re only reheating. That’s 4–6 minutes max. Any longer and you’ll be chewing on disappointment. Quick steam is your secret weapon.
How To Boil Water Faster - Recipes.net