Yam Puff - cooking recipe

Ingredients

4 c. cut-up cooked or canned yams or sweet potatoes
1/4 c. butter, melted
1/2 c. light cream
4 eggs, separated
3/4 tsp. salt
1/4 tsp. pepper
1/8 tsp. cinnamon
4 egg whites

Preparation

Cook yams or sweet potatoes.
Cover and boil in just enough salted water to cover until they can be pierced easily with a fork, about 40 minutes.
Cool and peel.