Spinach, Smoked Salmon And Cheddar Cheese Ball
["1 c. butter, divided", "1 c. flour, divided", "1 qt. chicken stock", "1/2 lb. sliced mushrooms, sauteed", "1 c. heavy cream", "1 1/2 c. Grey Poupon Dijon mustard, divided", "1/2 lb. onion, chopped", "1 1/2 Tbsp. olive oil", "1 lb. frozen spinach, drained and chopped", "1/2 c. sour cream", "1 lb. smoked salmon, chopped", "1/4 tsp. nutmeg", "8 eggs, separated", "2 c. half and half", "1/2 c. Cheddar cheese, shredded"]
["In a heavy bottom saucepan, melt 1/2 cup of butter.", "Add 1/2 cup of flour.", "Cook 5 minutes.", "Add chicken stock and simmer for 30 minutes, stirring often.", "Strain and add sauteed mushrooms, heavy cream and 1 cup of Dijon mustard; simmer for 5 minutes. Season with salt and pepper and hold for service."]
["butter", "flour", "chicken stock", "mushrooms", "heavy cream", "mustard", "onion", "olive oil", "frozen spinach", "sour cream", "salmon", "nutmeg", "eggs", "Cheddar cheese"]