Crab
Crab's sweet, briny flesh suits quick cooking to preserve texture.
Crab is a shellfish with tender, flaky white meat inside a hard shell. It tastes strikingly sweet and briny, with a warm, buttery richness and a faint seaweed note that speaks of the ocean.
Cooks love crab because it needs so little: melted butter, a squeeze of lemon, or a dab of mayonnaise turns it into a feast. It shines in crab cakes, pasta, salads, soups and the classic seafood boil.
Flavor profile
Aroma: sweet, briny, seaweed
Good to know
Origin: Worldwide marine environments
Forms: whole, lump meat, claw meat
Season: Varies by species: Dungeness is typically best from late autumn into spring, blue crab peaks in summer, and king and snow crab are usually sold frozen year-round.
Nutrition: A lean source of protein; crab is a shellfish, a common allergen.
Storage: Keep live crabs cool and damp, covered with a wet cloth in the fridge, and cook them the same day. Cooked crab and fresh-picked meat should be refrigerated and eaten within 2–3 days. Unopened pasteurised crab meat keeps for several weeks in the fridge; once opened, use within 3–5 days. Cooked crab meat freezes for about 3 months, though it softens a little, so it is best used in cooked dishes afterwards. Allergen note: crab is a shellfish.
How to use crab
Salty Boil
Boil in salty water to season the exterior evenly without over-extracting flavors.
Crab Cake Secrets
Mix with breadcrumbs. Gluten firms the cake during frying for a crisp exterior while keeping the inside tender.
The science of crab
- Crab's sweetness comes from free amino acids such as glycine, alanine and arginine, along with glutamate and nucleotides that add savoury depth. These compounds are richest when crab is very fresh.
- Crab shells contain the reddish pigment astaxanthin bound to proteins that make it look blue-grey or brown. Heat breaks those protein bonds and releases the red colour, which is why crabs turn bright orange-red when cooked.
- Crab meat is lean and delicate. Pre-cooked crab only needs warming through; long cooking tightens its proteins and makes it stringy.
- Once a crab dies, enzymes and bacteria break down its flesh quickly, which is why live crabs are cooked alive or killed just before cooking, and why crab meat has a short fridge life.
How to choose crab
Live crabs should be lively and feel heavy for their size, which means they are full of meat. For picked meat, lump and jumbo lump are best for crab cakes and salads, while darker, stronger claw meat suits soups and dips. Pasteurised crab meat in tubs keeps longer than fresh-picked; avoid any with a sour or ammonia smell.
Substitutes for crab
| Swap | Amount | What changes |
|---|---|---|
| Lobster meat | 1:1 | Similar sweet richness with a firmer texture; pricier. |
| Cooked shrimp, chopped | 1:1 | Easy to find and works in crab cakes and dips; a little firmer. |
| Imitation crab (surimi) | 1:1 | Made from white fish and starch; fine for sushi rolls and salads but less sweet and contains added salt and sugar. |
| Hearts of palm or shredded artichoke | 1:1 | A plant-based swap for crab cakes and dips, with a flaky texture. |
What goes with crab
- Butter. Butter's fat mingles with crab's natural sugars for sweetness.
- Lemon. Lemon's acidity brightens crab's natural sweetness and provides contrast.
- Mayonnaise. Mayonnaise's creamy fat coats crab's delicate sweetness, as in crab cakes.
- Paprika. Paprika adds smokiness, amplifying crab's sweet, briny taste.
- Avocado. Avocado's buttery softness frames crab's delicate sweetness.
- Chili Flake. Chili heat contrasts with crab's delicate sweetness.
- Ginger. Ginger's clean heat cuts crab's rich sweetness, as in Asian crab dishes.
- Cilantro. Cilantro’s citrus notes add a fresh layer to crab's briny flavor.
Mistakes to avoid
- Fibers toughen if overcooked past the shelling point.
- Insufficient salt fails to bring out crab's natural sweetness.
Ideas for tonight
- Classic Maryland crab cakes with remoulade sauce
- Crab-stuffed mushrooms with herbs
- Chilled crab salad with avocado and grapefruit
Crab: questions
What does crab taste like?
Crab tastes sweet, mild and briny, with a tender, flaky texture. Body meat is delicate and white; claw meat is darker and more strongly flavoured.
How long do you boil crab?
In well-salted boiling water, a whole live crab takes about 12–15 minutes for a 1 kg (2 lb) Dungeness, or 8–10 minutes for smaller blue crabs. Already cooked king or snow crab legs just need 4–6 minutes to heat through.
What is the difference between lump and claw crab meat?
Lump meat comes from the body near the legs and is white, sweet and chunky. Claw meat is pinkish-brown, stronger in flavour and more shredded, making it ideal for soups and dips.
Is imitation crab real crab?
No. Imitation crab, or surimi, is mostly white fish such as pollock, mixed with starch, flavourings and colouring. It may contain a little crab extract, so people with shellfish allergies should still check the label.
Can you freeze crab meat?
Yes, cooked crab meat freezes for about 3 months. The texture softens slightly, so use thawed crab in cakes, pasta or soups rather than cold salads.
How do you know if crab has gone bad?
Fresh crab smells sweet and briny. A sour, ammonia-like or strongly fishy smell, a slimy texture, or discoloured meat are signs to throw it away.
What goes well with crab?
Crab pairs best with butter, lemon, mayonnaise, paprika, avocado. Butter's fat mingles with crab's natural sugars for sweetness.
How do you use crab in cooking?
Salty Boil: boil in salty water to season the exterior evenly without over-extracting flavors.
How should you store crab?
Keep live crabs in a cool, damp environment; refrigerate cooked crab meat and consume within 2-3 days.
What is the most common mistake with crab?
Fibers toughen if overcooked past the shelling point.
Butter
Lemon
Mayonnaise
Avocado
Shrimp
Scallop
Chili Flake
Paprika