Ingredients:
3 cups hot mashed potatoes
2 egg yolks
1 cup sour cream
2 cups diced cooked ham
2 egg whites
salt
white pepper
2 tablespoons butter

Preparation:
1. Preheat oven to 350 degrees F.
2. Beat egg yolks with mashed potatoes and season with salt and pepper.
3. Add sour cream and ham.
4. Beat egg whites until stiff and fold into potato mixture.
5. Place in a buttered casserole, dot with butter and bake 30 minutes.