Set the chafing dish pan over direct heat. Melt butter, add onion, and after a short time add shrimp, crabmeat, and mushrooms. When cooked pour in brandy and flame it. Add spices ,lobster bisque, and vermouth. Gently add the whipping cream. Stir and cook for 3 or 4 min more. Serve over fluffy rice and sprinkle with parsley. King Neptune is a divine soupy consistency, that should be served in a deep dish or shallow bowl.