2 tbsp. chilled whipping cream
1 c. dry white wine
1/4 c. dry vermouth
3 shallots, minced
1 c. whipping cream
4 (6 oz.) 1 inch thick salmon fillets
1/4 c. (1/2 stick) unsalted butter, cut into pieces
2 tbsp. Dijon mustard
1/4 c. chopped fresh chives
Salt and pepper

Whisk 2 tablespoons cream in small bowl to soft peaks; cover and refrigerate.

Combine wine, vermouth and shallots in heavy large skillet. Boil until liquid is reduced by half, about 5 minutes. Add 1 cup cream and bring to boil. Reduce heat to low. Add fish fillets. Cover and simmer until just cooked through, about 10 minutes. Transfer fish to plates using slotted spatula. Tent with foil to keep warm.

Place skillet with poaching liquid over high heat. Boil until reduced to 3/4 cup, stirring occasionally, about 5 minutes. Reduce heat to low. Gradually add butter, whisking until melted. Add mustard and chives and whisk to blend. Remove sauce from heat. Fold in chilled whipping cream. Season with salt and pepper. Spoon sauce over fish. 4 servings.