White Fish with Mustard Beurre Blanc
A French Classic, Perfectly Balanced
There are certain dishes that reveal more about a cook’s understanding than their ambition. White fish with beurre blanc is one of them.
It is not complex, nor is it forgiving. The success of this dish lies in restraint of movement, attention to temperature, and respect for balance. When done properly, the result feels effortless, delicate fish, a velvety sauce, and a harmony that requires no embellishment.
This is quiet French cooking at its best.
Serves
4
Time
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Preparation: 5 minutes
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Cooking: 15 minutes
Ingredients
Fish
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8 small fish fillets (Sole, Haddock, Sea Bass, Flounder, or Tilapia for an affordable option), about 3 oz each
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4 tablespoons butter
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Salt and freshly ground white pepper
Mustard Beurre Blanc
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2 shallots, finely chopped
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½ cup dry white wine
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1 tablespoon white wine vinegar
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½ cup heavy cream
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4 oz cold butter, diced
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1 tablespoon wholegrain mustard
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Salt and freshly ground white pepper
Instructions
1. Prepare the Pan
Melt 2 tablespoons of butter in a wide pan over medium heat. Keep warm while you prepare the sauce.
2. Make the Mustard Beurre Blanc
In a small saucepan, combine the shallots, white wine, and vinegar. Bring to a boil, then reduce the heat and simmer until the liquid has almost completely evaporated, about 5 minutes.
Add the cream and simmer gently for 2–3 minutes.
Lower the heat and begin whisking in the cold butter, a few pieces at a time, allowing each addition to melt fully before adding more. This gradual process is essential for achieving a smooth, stable sauce.
Strain the sauce into a warm bowl, discarding the shallots. Stir in the mustard and season carefully with salt and white pepper. Keep warm—but never boiling—until ready to serve.
3. Cook the Fish
Arrange the fish fillets in the prepared pan. Brush with the remaining melted butter and season lightly with salt and white pepper.
Cook for about 3 minutes per side, depending on thickness, until the fish is just cooked through and flakes easily when pressed.
4. To Serve
Place two fillets on each plate and spoon the warm mustard beurre blanc generously over the top. Serve immediately.
Mrs. Mayfair’s Notes
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Choosing the fish: Any firm, mild white fish works well here.
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On beurre blanc: This classic sauce rewards patience. Keep the heat gentle and add the butter slowly to preserve its silkiness.
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Versatility: The same sauce pairs beautifully with chicken breasts or simple steamed vegetables.
This dish captures the essence of French home cooking: attentive, generous, and quietly assured. It is food meant to be enjoyed slowly, with good company and a well-set table.
From our house to yours,
Mrs. Mayfair
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