P
Chinese · Shandong
Cong Shao Hai Shen (葱烧海参) — Scallion-Braised Sea Cucumber
Cong shao hai shen (葱烧海参, scallion-braised sea cucumber) is considered one of the most challenging and prestigious preparations in the Shandong culinary canon — a test of both ingredient preparation skill and sauce-building technique. Sea cucumber (海参, hai shen) must undergo an elaborate rehydration process before cooking; the finished dish should have a sea cucumber that is silky, deeply savoury, and saturated with a glossy scallion-braised sauce, resting in a pool of intensely flavoured braising liquid that has been reduced to a near-glaze.
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I
The Market List
The benchmark for each ingredient, and who stocks it near you. Tap a stockist to go straight to the product.
4–6
dried sea cucumber
whole; to yield approximately 400–500 g rehydrated
Not yet stocked in British Columbia
For the scallion braise
100 g
large scallion (da cong)
cut into 5 cm pieces
Not yet stocked in British Columbia
generous
neutral oil
sufficient to deep-fry and caramelise the scallion
Not yet stocked in British Columbia
200 ml
superior stock (qing tang)
the best available
Not yet stocked in British Columbia
2 tbsp
Shaoxing wine
Not yet stocked in British Columbia
2 tbsp
light soy sauce
1 tbsp
oyster sauce
Not yet stocked in British Columbia
1 tsp
dark soy sauce
1 tsp
sugar
Your own market
To finish
1 tbsp
Each tap is counted, so the stockist sees the demand Provenance sends them.
II
The Method
1
Day 1 — Place the dried sea cucumbers in a container of cold water. Leave to soak for 24 hours. They will begin to soften. The flesh should yield slightly to pressure by the end of the period.
2
Day 2 — Transfer the sea cucumbers and fresh cold water to a covered pot. Bring to a boil, turn off the heat, and allow to cool slowly, undisturbed. Repeat this boil-and-cool cycle once more on the same day. The bodies will expand further and the exterior will become visibly smoother.
3
Day 3 — The sea cucumbers should now be pliable and substantially expanded. Using a knife, cut each one open along its length and remove the internal organs and any calcified ring. Rinse thoroughly under cold running water. Repeat the boil-and-cool process once. The flesh should feel supple and spring back gently when pressed.
4
Day 4 — The sea cucumbers are fully rehydrated. They should measure 4–5 times the volume of the dried original and be uniformly silky to the touch with no rubbery resistance. Any piece that remains firm at its centre must be returned to a further boil-and-cool cycle before proceeding. This rehydration is the foundation upon which the entire dish rests: an insufficiently rehydrated sea cucumber will neither absorb the braising sauce nor achieve the required texture — this is where the dish lives or dies.
5
Set a wok or wide braising vessel over medium-low heat and add a generous quantity of neutral oil. Add the scallion pieces (da cong, cut into 5 cm lengths) and fry slowly for 10–15 minutes, turning occasionally. The scallion will collapse, deepen in colour to a rich amber-brown, and exhale a sweet, caramelised fragrance — this scallion oil is the cooking medium and the essence of the cong shao technique.
From the canon — Spring onion is the most ubiquitous aromatic in Chinese cooking and its function is more complex than its common use as a garnish suggests. SCALLION (SPRING ONION) TECHNIQUE →
6
Add the superior stock (qing tang), Shaoxing wine, light soy sauce, oyster sauce, dark soy sauce, and sugar to the scallion oil in the wok. Stir to combine. Lower the rehydrated sea cucumbers into the liquid. Reduce the heat to low and braise, covered, for 30–45 minutes. The cucumbers will swell further and darken as they absorb the sauce; they should feel yielding but intact when pressed with a spoon.
From the canon — Oyster sauce was invented by accident in the 1880s in Guangdong province when a cook named Lee Kum Sheung left oyster soup simmering too long and discovered … Oyster Sauce (Cantonese — Original Method vs Commercial) →
7
Remove the sea cucumbers and set aside. Raise the heat and reduce the braising liquid until it thickens to a near-glaze, concentrating the scallion and soy flavours. Return the sea cucumbers to the pan. Add the cornstarch slurry in a thin stream, stirring constantly, until the sauce coats the cucumbers in a glossy, clinging film. The surface should be visibly lacquered and catch the light.
III
Quality Hierarchy
01
Reserve — Wild-caught North Pacific or Liaodong Peninsula dried sea cucumber, rehydrated over four full days; hand-drawn double-boiled qing tang made from whole chicken and Jinhua ham.
02
Estate — High-grade farmed dried sea cucumber from a named Chinese coastal producer; home-made superior stock prepared from chicken carcasses and a small quantity of cured pork.
03
Market — Commercially dried sea cucumber of reliable provenance; a strong, well-reduced chicken stock in place of qing tang.
04
House — Budget dried sea cucumber requiring extended rehydration to compensate for lower initial quality; good-quality shop-bought chicken stock, enriched if possible with a piece of dried scallop or Shaoxing wine during heating.
IV
Sensory Tests
◇Touch. Fully rehydrated sea cucumber yields completely to gentle pressure with no rubbery resistance at the centre, and measures 4–5 times its original dried volume.
◇Smell. Scallion pieces have released their sharp raw note entirely; the aroma is deep, sweet, and caramelised — the signal that the scallion oil is ready.
◇Sight. The finished sauce coats the sea cucumbers in a lacquered, glossy glaze that holds its shape on the surface of the dish rather than pooling as a thin liquid.
◇Where it lives or dies. The dish lives or dies on complete rehydration: a sea cucumber that has not reached 4–5 times its dried volume, with uniformly silky and pliable flesh, will never absorb the braising sauce and cannot be rescued by any subsequent technique.
Pillar V
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VI
What to Pour
The pairing
Agave spirit
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The whole pairingPillar VII
Origin and lineage are part of membership.
Where the dish comes from and how it came to be — on every recipe.
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