Chef Juliette
Oriental Sauce
Sauce Orientale concentrates lobster-rich American Sauce with curry, then folds in cream away from the fire: a glossy, gently spiced derivative made for lobster, crayfish, and firm fish.
Culinary Explorer
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Nantua Sauce
Created by Chef Juliette
Sauce Nantua turns cream-reduced Béchamel into the signature sauce of Bugey: an ivory base, coral crayfish butter, and sweet little tails, finished off the heat so the butter stays glossy and fragrant.
Sauces & Condiments
French
Dinner Party
Special Occasion
15 min
Active Time
45 min cook•1 hr total
YieldAbout 2 quarts (1.9 L)
Sauce Nantua (cream-enriched Béchamel finished with crayfish butter) teaches one true thing: the reduction comes before the butter. Reduce the base until it has body, then mount the crayfish butter off the boil; reverse that order and the shellfish perfume fades while the sauce turns greasy. The butter carries the dish.
The original entry assumed a saucier with finished Béchamel and crayfish butter already at hand, plus a tammy for the final polish. Your honest equivalents are those same prepared foundations, a wide heavy saucepan, and a fine-mesh sieve. Keeping a whole sauce station alive is brigade scaffolding and can go; reducing by a third, straining, and finishing with real cream and crayfish butter are the dish and must stay. This batch preserves the original two-to-one proportion of Béchamel to cream and its finishing ratios, recalculated to yield about two quarts.
Watch the heat at the finish. The sauce should fall from the spoon in a broad coral-ivory ribbon, with small tails tucked through it and the sweet mineral fragrance of crayfish arriving before the cream. Once the butter enters, don't let the pan boil again; that is the step that decides Nantua.
Sauce Nantua takes its name from Nantua in the Ain, east of Lyon in Bugey, where the lake and surrounding waterways made crayfish part of the local table. From Bugey it entered Lyon's repertoire as the customary partner to quenelles de brochet, its crayfish butter lending pale Béchamel a coral tint and concentrated shellfish perfume. Some kitchens build richer versions on fish velouté or crayfish reduction, but this classical branch begins with Béchamel and cream, then finishes with butter and tails.
The technique, the tradition, and the story behind every dish.
Discover Culinary ExplorerIngredients
finished Béchamel Sauce
Quantity
6 cups (1.42 L / about 1.5 kg)
heavy cream
Quantity
3 cups (710 ml / 710 g)
for the reduction
heavy cream
Quantity
6 tablespoons (90 ml / 90 g)
for finishing, divided
very fine crayfish butter
Quantity
1 cup plus 2 tablespoons (270 ml / 255 g)
kept cool and cut into small pieces
small cooked shelled crayfish tails
Quantity
3 tablespoons (45 ml / 45 g)
drained and patted dry
| Ingredient | Quantity |
|---|---|
| finished Béchamel Sauce | 6 cups (1.42 L / about 1.5 kg) |
| heavy creamfor the reduction | 3 cups (710 ml / 710 g) |
| heavy creamfor finishing, divided | 6 tablespoons (90 ml / 90 g) |
| very fine crayfish butterkept cool and cut into small pieces | 1 cup plus 2 tablespoons (270 ml / 255 g) |
| small cooked shelled crayfish tailsdrained and patted dry | 3 tablespoons (45 ml / 45 g) |
Equipment Needed
- •Wide 5-quart heavy saucepan or saucier
- •Fine-mesh sieve, at least 8 inches wide
- •Balloon whisk
- •Heatproof spatula or flat-edged wooden spoon
- •Clean 2-quart heatproof container
Instructions
- 1
Ready the foundations
Measure the finished Béchamel Sauce, both additions of cream, crayfish butter, and tails before applying heat. Reserve 1 tablespoon (15 ml / 15 g) of the finishing cream for the emulsion, set a fine-mesh sieve over a clean heatproof bowl, and keep the crayfish butter cool but pliable. Pat the tails dry and check them carefully for fragments of shell; excess packing liquid would thin the finished sauce.
- 2
Reduce by one third
Combine the Béchamel Sauce with the 3 cups (710 ml / 710 g) of reduction cream in a wide, heavy saucepan. Bring it to a controlled boil over medium heat, whisking across the bottom and into the corners, then maintain lively but steady bubbling until the original 9 cups have reduced to about 6 cups, 30 to 40 minutes. The bubbles will broaden, the sauce will cling heavily to a spoon, and a line drawn through it will close slowly. This reduction must happen now, before the crayfish butter enters. If the bottom begins to catch, don't scrape it: immediately pour the clean upper sauce into another pan and leave the browned layer behind. Ça se rattrape when caught early; a bitter, scorched sauce does not.
- 3
Pass the sauce
Rub the reduced sauce through the fine-mesh sieve with the back of a ladle, scraping the smooth sauce from the underside into the bowl. The old kitchen used a tammy, a fine cloth sieve; the metal sieve is its honest home equivalent. Straining removes any cooked milk skin and roux specks, giving Nantua the uninterrupted silk the crayfish butter deserves. Transfer the strained sauce to a clean saucepan.
- 4
Mount the crayfish butter
Warm the strained sauce over low heat and whisk in 5 tablespoons (75 ml / 75 g) of the finishing cream. Remove the pan from the heat before adding the crayfish butter a few pieces at a time, whisking each addition completely into the sauce before the next. The colour will shift from ivory toward pale coral and the surface will take on a satin gloss. If a greasy ring appears, the sauce is too hot: set the pan on a cool, damp towel and whisk in the reserved tablespoon of cream until it gathers again. Ça se rattrape. If the emulsion is already smooth, whisk in that final tablespoon normally. Do not boil the sauce once the butter is incorporated.
- 5
Warm the tails
Fold in the crayfish tails and return the pan to the lowest heat for 1 to 2 minutes, stirring gently, just until the tails are warmed through. Nantua is ready when it coats the back of a spoon and falls in a broad, glossy ribbon without looking pasty. Serve at once with quenelles de brochet, poached fish, or delicate shellfish, or hold it covered over barely warm water for no longer than 30 minutes. Never let it boil. À table!
Chef Tips
- •Crayfish butter is not decoration here. It supplies the shell fragrance, coral colour, and final gloss, so use a true butter infused with roasted crayfish shells, not tinted plain butter or margarine. We don't apologize for butter.
- •Begin with a fully cooked, smoothly seasoned Béchamel of pouring consistency. This entry treats Béchamel as a finished foundation, just as the classical sauce station did; rebuilding it inside Nantua would blur two distinct preparations.
- •Frozen cooked crayfish tails are an honest choice when fresh crayfish aren't available. Thaw them in the cold, drain them well, and pat them dry before measuring. Avoid strongly seasoned or vinegar-packed tails.
- •Sauce Nantua belongs beside quenelles de brochet, but it is also splendid with poached pike, sole, turbot, or scallops. A dry white from Bugey keeps the regional line precise and has enough freshness for the cream.
Advance Preparation
- •The Béchamel Sauce and crayfish butter are finished foundations and may be prepared up to 2 days ahead, covered, and kept cold. The listed preparation time begins once both are ready.
- •The Béchamel and cream may be reduced, strained, cooled promptly, and refrigerated up to 24 hours ahead. Reheat over gentle heat, then add the finishing cream, crayfish butter, and tails shortly before serving.
- •A finished Sauce Nantua may be held over barely warm water for up to 30 minutes. Press parchment directly onto its surface and whisk gently before serving; prolonged heat dulls the crayfish and encourages the butter to separate.
Frequently Asked Questions
Nutrition Information
1 serving (about 60g)
Calories
195 calories
Total Fat
19 g
Saturated Fat
10 g
Trans Fat
1 g
Unsaturated Fat
8 g
Cholesterol
50 mg
Sodium
175 mg
Total Carbohydrates
5 g
Dietary Fiber
0 g
Sugars
3 g
Protein
3 g
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