Korean
Ganjang-gejang — Soy-Marinated Raw Crab (간장게장)
Ganjang-gejang (간장게장) is called 'rice thief' (밥도둑) for compelling reason: live or freshly killed raw Korean blue crab (꽃게, Portunus trituberculatus) marinated cold in a soy sauce brine for 3–7 days, the result is so intensely savoury and complex that plain rice becomes a vehicle for consuming it. The technique involves making a seasoned soy brine (ganjang + water + garlic + chilli + ginger + sesame) brought to a boil, cooled completely, and poured over cleaned whole crabs; the brine is drained, re-boiled, cooled, and re-poured over the crabs two to three times over successive days. The cold brine 'cooks' the crab through protein denaturation without heat — a form of ceviche logic applied to Korean fermentation principles.
‹Swipe for the next dish›
Two in town · four not yet within reach.
How the 6 are reached
- In town
- 2 · garlic, fresh ginger
- Not yet within reach
- 4 · korean blue crab (꽃게, Portunus trituberculatus), ganjang (Korean soy sauce), dried red chilli, sesame seeds
I
The Market List
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4
Korean blue crab (꽃게, Portunus trituberculatus)
live or just-killed; whole, scrubbed clean under cold running water
Not yet within reach of Chilliwack · each reach is counted
For the soy brine
500 ml
ganjang (Korean soy sauce)
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500 ml
water
Your own market
1 head
3
dried red chilli
left whole
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30 g
1 tbsp
sesame seeds
lightly toasted
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II
The Method
1
Kill the crabs immediately before preparation, then remove the top shell, discard the gills, and rinse the body cavity under cold running water — the gills carry a muddy bitterness that would cloud the finished brine. Pat dry and arrange the crabs in a deep, non-reactive container, stainless steel or food-grade ceramic, large enough to hold them in a single close layer. The crab is ready when all surfaces are clean and the roe (게란 내장) is visible as an intact orange-coral mass inside the body.
2
Combine the ganjang, water, garlic, chilli, ginger, and sesame in a saucepan and bring to a full boil over high heat, then remove from the heat, so the garlic and ginger release their fragrance into the brine rather than staying raw and sharp against the crab. Allow the brine to cool completely to room temperature, then refrigerate until cold — it must read below 4 °C before it touches the crab. The brine is ready when it smells of sharp, clean soy with garlic riding just behind it.
3
Pour the cold brine over the crabs until fully submerged, weighting with a small plate if necessary to keep every surface beneath the surface, so no exposed flesh oxidises or dries unevenly during the cure. Cover the container and refrigerate at or below 4 °C for 24 hours. This is where the dish lives or dies: the marinating temperature must never deviate above 4 °C, and the crab must have been live or just-killed — any compromise on either condition renders the preparation unsafe and the dish is lost.
4
After 24 hours, drain the brine from the crabs into the saucepan and return the crabs to the refrigerator while you work, so they are never left to warm. Bring the drained brine to a full boil, skimming any foam that rises — skimming keeps the brine clear and prevents any off-flavour from the proteins drawn out of the crab accumulating in successive cycles. Remove from the heat, cool completely, refrigerate until cold, then pour the re-boiled brine back over the crabs; cover and refrigerate. The brine will have deepened in colour and thickened slightly — this concentration is correct.
5
Repeat the drain-reboil-cool-re-pour cycle two to three more times over successive days, for a total marinating period of 3–7 days, so each pass drives the brine deeper into the flesh and cavity rather than leaving the cure concentrated only at the surface. At 3 days the crab flesh will be translucent, lightly set, and deeply saline; at 7 days it will be more fully cured throughout. The roe should be soft, creamy, and paste-like — this is the marker of a properly marinated ganjang-gejang.
6
Serve the crab cold, directly from the refrigerator, alongside a bowl of plain cooked short-grain white rice. The crab's soy-marinated juices are mixed grain by grain into the rice at the table. Consume within 7–10 days of the initial pour; beyond this point the flesh softens past the point of correct texture.
III
Quality Hierarchy
01
Reserve — Live West or South Coast Korean blue crab (꽃게) sourced on the day of preparation, carrying intact orange-coral roe; naturally brewed Korean ganjang aged at least three years — its depth is the brine's entire character.
02
Estate — Live Korean blue crab sourced the morning of preparation from a known fishmonger; a well-regarded artisan ganjang. Roe present; brine balanced between salt and roundness.
03
Market — Freshly killed crab purchased the same day and prepared immediately; a reliable commercial Korean soy sauce. The result is sound and safe but the brine has less complexity.
04
House — The minimum viable version: maximally fresh whole crab killed on purchase, a standard ganjang, the full multi-pour cycle observed rigorously. Acceptable if every cold-chain and freshness condition is met without exception.
IV
Sensory Tests
◇Smell. The cooled brine smells of sharp, clean soy with garlic prominent — no off or sour note.
◇Sight. After the first 24-hour pour the crab flesh has begun to turn from translucent blue-grey toward an opaque, lightly set ivory.
◇Sight. By day 3–7 the re-boiled brine has concentrated and deepened to a dark mahogany; the roe has softened to a vivid orange-coral paste.
◇Touch. A fingertip pressed to the roe meets no resistance — it yields as a thick cream, the definitive sign that marination is complete.
◇Where it lives or dies. The dish cannot cross the line of marinating above 4 °C or beginning with any crab that was not live or just-killed, as pathogenic contamination during the raw cold-cure is then uncontrollable.
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VI
What to Pour
The pairing
Baijiu
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The working kitchen
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