In a saucepan over medium heat, combine the first eight ingredients. Bring to a boil. Reduce heat; simmer, uncovered, for 30 minutes.
Remove head and tail from salmon if desired. Place a double thickness of heavy-duty foil on a baking sheet (longer than the length of the fish). Grease foil. Place salmon on foil; sprinkle the cavity with salt. Pour herb sauce over fish. Fold foil over fish and seal tightly.
Bake at 375° for 60-75 minutes or until fish flakes easily with a fork.
Place salmon on a serving platter and keep warm. Strain cooking juices, reserving 1/3 cup. In a large saucepan, saute green onions in butter until tender. Stir in flour until blended. Gradually stir in the water, wine and reserved cooking juices. Bring to a boil; cook and stir for 2 minutes or until thickened.
Reduce heat. Stir a small amount of hot liquid into egg yolks; return all to the pan, stirring constantly. Add the cream, salt and pepper. Cook and stir until mixture reaches 160°. Serve with the salmon. Yield: 12-14 servings.