Crayfish with Nantua Sauce
Submitted by gloriam7
Classic French Nantua sauce built from live crayfish, cognac flambé, mirepoix, tomato, and cream, reduced to a velvety finish. A masterclass in old-school French technique.
YIELD
2 servingsPREP
25 minCOOK
45 minREADY
70 minNantua sauce is one of the great French mother sauces’ elegant cousins, and making it from scratch is the kind of kitchen project that rewards every minute of effort.
Live crayfish get sautéed with garlic, mirepoix, and mushrooms before a dramatic cognac flambé sets the whole thing ablaze.
From there, tomato, fresh herbs, and fish stock simmer together before the mixture is strained through a chinois and reduced with cream into something silky and deeply flavored.
This is not a weeknight shortcut. This is a Saturday afternoon with good music, a glass of something French, and the satisfaction of building flavor the way kitchens in Lyon have done for centuries.
Kitchen Tips
- Flambéing cognac safely: Pull the pan off the heat before adding the cognac, then tilt the pan toward the flame or use a long match. Stand back and let the alcohol burn off completely.
- Mash firmly but don’t overwork it. The goal is to break open the crayfish shells to release flavor into the sauce, not to pulverize everything.
- A chinois (fine mesh strainer) is non-negotiable here. The double straining is what gives Nantua sauce its signature smooth, velvety texture.
- This sauce pairs beautifully with poached fish, lobster, or even simple egg dishes like quenelles.
Ingredients
Directions
Mirepoix is a mixture of diced onions, carrots, celery and leeks.
Heat the olive oil in a sauté pan over medium heat.
When the oil is very hot, add the live crayfish and sauté for 1 minute.
Add the garlic bulb (halved), mirepoix, peppercorns, bay leaf and button mushrooms.
Cook for another minute.
Add the cognac and flame the pan.
Pour the contents into a saucepan and mash them up with a spoon.
To the sauce pan with the crayfish, add the chopped tomato, parsley, tarragon and tomato puree.
Deglaze the sauté pan with 4 cups of fish stock (enough so that it will cover ingredients in the saucepan) and pour the contents of the deglazed pan into the saucepan with the crayfish and vegetables.
Roughly mash the contents of the saucepan again.
Cook (boiling) for 20 minutes.
Strain the contents of the saucepan with the crayfish through a chinois into another sauté pan.
Reduce the liquid by two thirds.
Add the cream, salt, pepper, and cayenne pepper.
Reduce another 5 to 10 minutes to one-half.
Strain and reserve.
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