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Cooking and cracking crab
Advanced Butchery and seafood
Cooking and cracking crab is cooking live crabs, or reheating precooked legs, and getting the sweet meat out of the shell.
Written with AI help from the sources listed, and published by Cory. Sources: USDA safe minimum internal temperatures, USDA on the danger zone (40-140°F). Spot a mistake? Tell us and we'll fix it.
How do you do it?
- Keep live crabs cold and covered with a damp towel, never in fresh water, and cook them the same day.
- Steam blue crabs 20 to 30 minutes, or boil a 2-pound Dungeness 15 to 20 minutes, until bright orange-red. Precooked frozen legs need about 5 minutes of steam.
- Pull off the apron flap underneath, lift the top shell, and scrape out the feathery gills.
- Snap the body in half, pick the meat from the chambers, and crack legs with a mallet or shears, hand clear.
Why does it work?
Crab must be alive when it goes in the pot. Once it dies, enzymes quickly break the meat down and bacteria multiply. Most crab legs sold in stores were cooked and frozen on the boat, so cooking them again only dries them out. Some advisories suggest skipping the yellow-green 'mustard' because it can collect toxins.
What are the common mistakes?
- Recooking precooked legs — rubbery, dry meat.
- Eating the gills — they're inedible; discard them.
- Cooking crabs that were already dead — risky; throw them out.
Still stuck? Watch someone do it on YouTube.
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