Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      tablespoons   whipping cream -- chilled
   1      cup           dry white wine
     1/4  cup           dry vermouth
   3                    shallots -- minced
   1      cup           whipping cream
  24      ounces        salmon fillets
     1/4  cup           unsalted butter -- in pieces
   2      tablespoons   Dijon mustard
     1/4  cup           fresh chives -- chopped
                        salt
                        ground pepper

Preparation:

Whist 2 tablespoon cream in small bowl to soft peaks; cover and refrigerate. Combine wine, vermouth, and shallots in a heavy large skillet. Boil until liquid is reduced by half, about 5 minutes. Add 1 cup cream and bring to a boil. Reduce heat to low. Add fish fillets. Cover and simmer until just cooked through, about 10 minutes. Transfer fish to plates using a 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 whipped cream. Season with salt and pepper. Spoon sauce over fish.