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Blanquette de la Mer — Seafood in White Velouté

Blanquette de la mer is the seafood adaptation of the classical blanquette de veau — mixed fish and shellfish poached in white stock and served in a cream-enriched velouté finished with egg yolk liaison. The defining characteristic is whiteness: no browning of the fish, no tomato, no dark wine — the entire dish is deliberately kept pale, showcasing the purity of the ingredients. The fish selection must balance texture and flavour: firm white fish (200g monkfish, 200g turbot), shellfish (8 scallops, 12 mussels, 8 langoustine tails), and optionally 200g salmon for colour contrast. Prepare a fish fumet base (1 litre) with white wine, shallots, and mushroom trimmings. The firm fish goes in first, poached gently at 80°C for 5 minutes; scallops and langoustine tails are added for the final 3 minutes; mussels are opened separately à la marinière and their strained liquor added to the fumet. While the fish poaches, prepare turned mushrooms (24 caps, cooked à blanc in lemon water and butter) and pearl onions (glazed à blanc in butter, water, and sugar without colour). The sauce: reduce 500ml of the poaching liquid by half. Add 200ml fish velouté, 100ml double cream, and reduce to nappant consistency. Off the heat, incorporate a liaison of 2 egg yolks beaten with 50ml cream — stir gently without boiling. Add a squeeze of lemon, the mushrooms, and onions. The fish is arranged in a deep platter, the mussels in their shells around the edge, and the sauce ladled over. Scatter with chervil pluches. The dish is all silk and light — the antithesis of the robust Mediterranean fish stew.

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ServesFour portions
Sourced0of 17 in BC
Cook
‹ Previous · Bisque de Homard — Classical Lobster Bisque|Next · Blanquette de Veau — White Veal Stew with Cream and Mushrooms ›
I

The Market List

The benchmark for each ingredient, and who stocks it near you. Tap a stockist to go straight to the product.

200 g
monkfish
trimmed, cut into portions
Not yet stocked in British Columbia
200 g
turbot
cut into portions
Not yet stocked in British Columbia
200 g
salmon
cut into portions slightly larger than the white fish
Your own market
8
scallops
Not yet stocked in British Columbia
12
mussels
cleaned, opened à la marinière; liquor strained and reserved
Not yet stocked in British Columbia
8
langoustine tails
shelled
Not yet stocked in British Columbia
For the fish fumet
1 litre
fish fumet
prepared with white wine, shallots, and mushroom trimmings
Not yet stocked in British Columbia
For the sauce
500 ml
poaching liquid
from the fumet; reduced by half
Not yet stocked in British Columbia
200 ml
fish velouté
Not yet stocked in British Columbia
100 ml
double cream
Your own market
For the liaison
2
egg yolks
beaten with the cream below
Your own market
50 ml
double cream
beaten with the egg yolks
Your own market
1 squeeze
lemon juice
added off the heat with the liaison
Not yet stocked in British Columbia
For the garniture
24
mushroom caps
turned; cooked à blanc in lemon water and butter
Not yet stocked in British Columbia
16
pearl onions
glazed à blanc in butter, water, and sugar without colour
Your own market
To finish
1 tbsp
Noilly Prat
dry vermouth; added to the fumet before reducing
Not yet stocked in British Columbia
1 small bunch
chervil
pluches only
Not yet stocked in British Columbia
II

The Method

1
Open the mussels à la marinière. Strain their liquor through a fine cloth and add it to the fish fumet. The fumet must remain pale and clear — any cloudiness or colour at this stage will compromise the finished sauce.
2
Cook the turned mushroom caps à blanc: simmer in lemon water with butter over a moderate heat until just tender. Reserve. Glaze the pearl onions à blanc in butter, water, and a pinch of sugar, allowing the liquid to reduce to a light coating gloss without any browning.
3
Bring the fish fumet to 80 °C. Add the Noilly Prat. Slide in the monkfish and turbot. Poach gently — the liquid must not boil — for 5 minutes. The flesh should offer slight resistance when pressed; it must not flake freely at this stage.
4
Add the scallops, langoustine tails, and salmon to the poaching liquid. Continue at 80 °C for a further 3 minutes. The scallops are done when they are just opaque through to the centre and yield to gentle pressure without springing back. Remove all fish and shellfish and keep warm, covered.
From the canon — Poaching is cooking a protein in liquid at a temperature below the boil — typically 75–85°C for most proteins, with variations specific to each. Poaching (Pocher) →
5
Measure 500 ml of the poaching liquid into a wide sauté pan. Reduce by half over a steady heat. Add the 200 ml fish velouté and 100 ml double cream. Reduce to nappant consistency — the sauce coats the back of a spoon and a line drawn through it holds clean. Pass through a fine chinois.
6
This is where the dish lives or dies. Remove the pan entirely from the heat. Beat the 2 egg yolks with the 50 ml cream and pour into the sauce in a steady stream, stirring constantly. The sauce must not return to a boil; heat alone will curdle the liaison irreversibly. Add the lemon juice, mushrooms, and pearl onions. The finished sauce is fluid silk — uniformly pale, with no streaks or graininess.
7
Arrange the fish and shellfish in a deep warmed platter. Place the mussels in their half-shells around the edge. Ladle the sauce over the fish, ensuring every piece is coated. Scatter chervil pluches. The surface should be an unbroken pale ivory, with the coral of the salmon and the mussels as the only departures from whiteness.
III

Quality Hierarchy

01
Reserve — Day-boat turbot and hand-dived scallops. Langoustines live or freshly killed. A premier-cru Chablis fumet base. Liaison of yolks from free-range hens with deep yellow colour — their richness gives the sauce its characteristic pale-gold hue.
02
Estate — Line-caught turbot; farmed scallops of reliable sweetness. A clean, dry white wine and quality shallots for the fumet. Double cream with a high butterfat content for nappant body.
03
Market — Any firm white fish of the day in place of turbot — brill, John Dory, or hake are appropriate substitutes. Fresh mussels. Supermarket double cream. A reliable fish fumet made from bought frames.
04
House — Monkfish and salmon alone, with mussels. A good-quality bought fish stock in place of a made fumet. Salmon omitted if unavailable. Dried chervil is an inadequate substitute — flat-leaf parsley pluches may replace it.
IV

Sensory Tests

◇Sight. No browning at any stage — the poaching liquid, the garniture, and the finished sauce must remain uniformly pale throughout
◇Touch. Monkfish and turbot offer slight resistance after 5 minutes; scallops yield to gentle pressure and are just opaque through the centre after 3 minutes
◇Sight. The reduced sauce coats the back of a spoon and a line drawn through it holds clean before the liaison is added
◇Sight. After the liaison, the sauce is uniformly fluid and pale with no streaks, graininess, or curdled particles
◇Smell. The Noilly Prat gives a faint herbal register in the reduced poaching liquid — it should not dominate, only deepen
◇Where it lives or dies. The egg yolk liaison must be incorporated off the heat entirely — a single boil after this point breaks the sauce to a grainy, curdled mass from which it cannot be recovered.
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The dishes this one teaches you, across the cuisines — on every recipe.
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VI

What to Pour

The pairing
El Silencio Espadin Mezcal
El Silencio Mezcal · Oaxaca — Mezcal
Not yet stocked in British Columbia
Agave spirit
From British Columbia
Fort Berens Riesling
Fort Berens Estate Winery · Lillooet
Not yet stocked in British Columbia
Wine
Without alcohol
GT's Synergy Organic Kombucha — Gingerade
Not yet stocked in British Columbia
Non-alcoholic

Why each one works is part of membership — Enter · from $49 a year →

The whole pairing
Pillar 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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