Korean Steamed Blue Crab (Whole Shell Aromatics)

Quick answer

Total time: 33 min
Level: Medium
Servings: 2 servings
Ingredients: 8

About this dish

Kkotge-jjim is a Korean steamed blue crab dish cooked whole in a steamer with lightly salted water and aromatic vegetables.

Steaming retains the natural juices and sweetness locked inside the shell more effectively than boiling or grilling, so the extracted meat delivers a concentrated, briny flavor with each bite. Dipping the pieces in vinegar soy sauce adds acidity that draws out and sharpens the crab's inherent sweetness, creating a clear contrast against the richness of the flesh. Blue crabs caught during their spring and fall peak seasons arrive heavy with roe and thick with tomalley, which means there is far more to eat beyond the white claw and body meat, and the flavor reaches its fullest depth. Cracking the shells by hand, working through each leg joint, and pulling out the meat is an integral part of how this dish is meant to be eaten. For those without a steamer, a shallow layer of water in a pot with a wire rack set above it works as a straightforward substitute.

Ingredients (2 servings)

Ingredient	Amount	Unit
blue crab	700	g
green onion	40	g
ginger	15	g
garlic	4	ea
rice wine	2	tbsp
water	400	ml
soy sauce	1.5	tbsp
vinegar	0.5	tbsp

Instructions

Read the steps as a cooking flow: prep, heat, seasoning, doneness control, and finish.

6 steps

1

Step

Scrub 700 g blue crab with a brush, working around the shell, legs, and underside flap.

Rinse off grit, then tidy the underside without opening the top shell, so the juices and roe stay inside.
2

Control

Pour 400 ml water into the steamer base, then add 40 g green onion, 15 g ginger, 4 garlic cloves, and 2 tablespoons rice wine.

Bring it to a strong boil over high heat until the aromatics smell clean and sharp.
3

Control

When steady steam rises, place the crabs belly side up on the steamer rack, keeping them in one layer as much as possible.

Cover immediately, so the steam does not escape before the shells begin to heat through.
4

Control

Steam over high heat for 10 minutes until the shells turn red, then lower to medium and steam 6 to 8 minutes more.

Keep the timing tight, because extra steaming dries the crab meat inside the shell.
5

Season

While the crabs steam, mix 1.5 tablespoons soy sauce with 0.5 tablespoon vinegar for the dipping sauce.

Stir in a small bowl until the saltiness and acidity are even, then keep it ready at room temperature.
6

Finish

Turn off the heat and let the crabs stand for 2 minutes, so the hottest steam settles.

Remove them carefully, cut into easy pieces, and serve right away with the vinegar soy sauce before the meat and tomalley run out.

Practical Cooking Checks

The cues that matter most while cooking.

Key technique: Kkotge-jjim locks in the natural sweetness of blue crab by steaming the whole shells over aromatics.
Finish cue: Turn off the heat and let the crabs stand for 2 minutes, so the hottest steam settles.
Substitution: For those without a steamer, a shallow layer of water in a pot with a wire rack set above it works as a straightforward substitute.