Beurre Blanc
A wine reduction holding a surprising quantity of butter. This relationship requires a low-temperature policy.
Ingredients
- 120 ml dry white wine
- 30 ml white wine vinegar
- 1 small shallot, finely minced
- 180 g cold unsalted butter, diced
- 1–2 tbsp water, as needed
- Salt and white pepper, to taste
Measures: 1 tbsp = 15 ml; 1 tsp = 5 ml. Yields are approximate. Pan width and heat affect reduction time; the texture gets the final vote.
Method
Reduce
Simmer wine, vinegar, and shallot in a small saucepan until about 2 tbsp liquid remains. Do not cook it dry.
Start the emulsion
Turn heat very low. Whisk in a few butter cubes until creamy. Add more a few at a time, whisking constantly.
Control the heat
Alternate on and off the burner so the butter softens into the sauce without boiling. Keep a little liquid present; add 1 tsp water if the sauce looks too thick or oily.
Finish
Whisk in all remaining butter, then season. Strain out shallot if desired and serve immediately.
Checkpoint: Opaque, glossy sauce that flows from a spoon; melted-butter clarity means it is separating.
Failure modes and fixes
Take off heat and whisk in a teaspoon of cool water. For a badly broken batch, slowly whisk it into a tablespoon of warm water in a clean pan.
More rescue techniques →Put it to work
Poached fish, scallops, leeks, or steamed vegetables.
Storage and reheating
Best made immediately before serving. Refrigerate leftovers promptly and use within 2 days, but expect separation when reheated; they can still be used as flavored butter. Storage and handling reference.