Julia Child'S Potatoes - cooking recipe

Ingredients

medium white sauce
1 c. shredded Swiss cheese
1 c. shredded Mozzarella cheese
1 c. shredded Cheddar cheese
5 lb. potatoes, boiled and peeled

Preparation

Boil and peel potatoes.
When cool, cut into slices.
Grease casserole dish with margarine.
Cover with layer of potatoes, then white sauce and 2/3 cup Swiss cheese.