Here's everything worth knowing about crab, hard shell and how to pick it, what it is, how to store it, and what to use instead, plus 22 recipes to cook tonight.

What is crab, hard shell?

Hard-shell crab means a whole, live crab still wearing its full, rigid shell, the form most home cooks buy by the dozen and cook themselves. On the East Coast that almost always means blue crab, the feisty Chesapeake swimmer with sweet, delicate meat.

The "hard shell" label matters because it tells you what to do with it. A hard crab has just molted into a firm exoskeleton and is sold live, to be steamed or boiled, then picked.

A soft-shell crab is the same animal caught right after molting, when the whole body is edible and you fry it shell and all.

Live hard crabs should be lively and feisty. A crab that's sluggish or unresponsive is on its way out, and a dead one should be discarded rather than cooked, since the meat spoils very fast.

How to Cook Hard-Shell Crab

Steaming is the gold standard for blue crab, because it concentrates the sweet meat instead of leaching it into the pot. Stack the live crabs on a rack above an inch or two of liquid, often beer and vinegar, and dust each layer heavily with seasoning.

Cover and steam 20 to 30 minutes until the shells turn bright orange-red. Steamed Blue Crabs walks through exactly that.

Boiling is the louder, more communal route. The crabs go into a big pot of heavily seasoned water with corn and potatoes, as in Liz & Tom's Crab Boil and Barbecued Corn & Hard Shelled Crabs, then everything dumps onto a newspaper-covered table.

Either way, the crab is done when the shell flushes a deep red-orange. Pull it then; pushing past that point only toughens the meat.

Picking is its own small craft. Twist off the legs and claws, pry off the top shell, scrape away the feathery gray gills, and crack the body to free the lump and backfin meat. A dozen crabs is a long, sticky, rewarding hour at the table.

Pairing and Common Mistakes

Old Bay is the signature, a celery-salt-and-spice blend so tied to blue crab that the can practically counts as equipment. Beyond that, the meat pairs with butter, lemon, garlic, beer, vinegar, corn, and potatoes for a classic seafood boil.

The picked meat reaches far beyond the table, though. It goes into Maryland Crab Soup with vegetables and more Old Bay, into Spaghetti with Crabs and Shrimp & Crab Spaghetti where it enriches a tomato sauce, and into spicy dishes like Sri Lanka Kakuluwo (Crab Curry) and Indonesian Curried Crab.

The first mistake is underseasoning the water or steam. Crab shells are armor, so the seasoning has to be aggressive to reach the meat, which is why a proper boil looks like far too much spice.

The second mistake is buying dead. A crab must be alive going into the pot or already cooked; the gap between death and cooking is where shellfish turns dangerous, so never cook one that's stopped moving.

Substitutes

For picked crabmeat in soups and pasta and gumbo, refrigerated pasteurized lump crab is the easy stand-in. It skips the live-crab labor entirely, though it costs more per ounce and loses a little sweetness.

Dungeness crab is a fine whole-crab swap on the West Coast, larger and meatier than blue, with a similar sweet flavor. Stone crab claws work where you only need claw meat.

If you just need sweet shellfish in a dish, lobster or shrimp will carry the recipe, though neither has crab's particular flavor. In a crab cake or dip, imitation crab is the budget last resort and tastes like it.

Buying and Storing

Buy hard crabs live and as close to cooking time as you can. Look for crabs that are heavy for their size and kick when you pick them up; light ones can be watery or recently molted with little meat.

A faint sweet-briny smell is good, while any ammonia or sour note means walk away.

Keep live crabs cold and damp but never submerged in fresh water, which kills them. Spread them in a bushel basket or open cooler under a wet towel, set in the fridge or over ice, and cook them the same day.

They weaken by the hour and won't survive an overnight.

Cooked crab keeps better. Refrigerate picked meat in a sealed container and use it within three to five days, or freeze it for up to three months. Whole cooked crabs in the shell also refrigerate for a few days; let your nose make the final call before eating any seafood.

Nutrition

Quick facts

Food group: Crab, hard shell is a member of the Finfish and Shellfish Products US Department of Agriculture nutritional food group.

In Chinese

蟹，硬壳

British (UK) term

Crab, hard shell

en français

crabe, coquille dure

en español

cangrejo, cáscara dura

How much does crab, hard shell weigh?

Amount	Weight
3 ounce	85 grams
1 crab	21 grams

Related

Finfish and Shellfish Products

Recipes using crab, hard shell

There are 22 recipes that contain this ingredient.

All 22 recipes