Brown Butter Bay Beurre Blanc Recipe

1. Clarify and Brown

Place 1 cup unsalted butter (cut into even pieces) in a light-colored, medium saucepan over medium heat. Allow butter to melt slowly, stirring occasionally. The butter will foam, then subside; keep cooking while watching closely. Once the milk solids sink and begin to turn golden brown and you smell a nutty aroma (about 6–8 minutes), remove the pan from heat immediately to prevent burning.

2. Strain and Season

Pour the browned butter through a fine-mesh sieve or cheesecloth into a heatproof bowl to remove browned solids. Stir in 1 tsp salt. Allow the browned butter to cool until slightly warm but still liquid (about 5–10 minutes). Measure out 6 tablespoons for the beurre blanc and reserve remaining brown butter for another use or to drizzle.

3. Reduce Aromatics

Combine 1 cup dry white wine, 2 tbsp white wine vinegar, and 3 tbsp minced shallot in a small saucepan over medium-high heat. Bring to a brisk simmer and reduce until about 2–3 tablespoons of liquid remain (roughly 8–12 minutes). This reduction concentrates flavor and mellows acidity.

4. Add Cream (Optional Stabilizer)

If using, whisk in 2 tbsp heavy cream to the reduced wine and heat gently until it just comes back to a simmer. This step increases emulsion stability but is optional; for a classic beurre blanc skip the cream.

5. Mount with Cold Butter

Reduce heat to low (sauce should be barely simmering or warm). Whisk in the 10 tablespoons of cold, diced unsalted butter a few pieces at a time, allowing each addition to emulsify before adding more. Continue whisking steadily until the sauce is smooth and slightly thickened. If the sauce is too hot and separates, remove from heat and whisk in a few ice cubes briefly, then discard them. If it is too cool, warm gently while whisking.

6. Incorporate Browned Butter

Whisk in the 6 tablespoons of the warm (not hot) strained brown butter a little at a time to integrate the nutty flavor into the emulsion. Taste and adjust seasoning with 1 tbsp fresh lemon juice, 1 tsp fine sea salt, and 1 tsp white pepper. Keep sauce warm (set over a pan of barely warm water) until serving; do not boil.

7. Just before serving, stir in 1 tbsp minced chives and (optional) 2 tbsp sliced green olives for a briny contrast. Spoon the brown butter bay beurre blanc over fish (cod, halibut, or sea bass), shellfish, or vegetables. The recipe yields about 1 1/4 to 1 1/2 cups of sauce — enough for 4 servings. Rewarm gently if needed; avoid reheating above very low heat to prevent breaking.