Ingredients
9 tablespoons unsalted butter, cut into tablespoons
2 shallots, thinly sliced
3/4 teaspoon Champagne vinegar
1 1/4 cups dry white wine
2 fresh thyme sprigs
2 tablespoons heavy cream
1/4 cup grainy mustard
Coarse salt and freshly ground pepper
Preparation
In a small saucepan, melt 1 tablespoon butter over medium heat. Add shallots and cook until translucent. Add vinegar, wine, and thyme, and continue to cook until reduced by two-thirds. Add cream and reduce until thick. Whisk in remaining 8 tablespoons butter. Strain through a fine sieve. Fold in mustard, and season with salt and pepper.
