Potato Souffle
["2 c. hot mashed potatoes", "2 eggs, separated", "1 c. hot milk", "2 Tbsp. butter or fat", "1/2 tsp. salt", "dash of white pepper"]
["Preparation time:", "15 to 20 minutes.", "Cooking time: about 90 minutes."]
["hot mashed potatoes", "eggs", "hot milk", "butter", "salt", "white pepper"]