Fluffy Potato Doughnuts
["3 eggs", "1 1/3 c. sugar", "1 tsp. vanilla", "1 c. mashed potatoes, cooled", "2 Tbsp. melted shortening or oil", "4 c. flour", "6 tsp. baking powder", "2 tsp. nutmeg", "1 tsp. salt", "1/2 milk"]
["Beat eggs with sugar and vanilla until light.", "Add potatoes and shortening.", "Sift together dry ingredients; add alternately with milk to potato mixture, beating well.", "Chill dough 3 hours. Fry in deep hot fat (375\u00b0) for about 3 minutes, or until brown, turning once.", "Drain.", "Dip in sugar.", "Makes 2 to 2 1/2 dozen."]
["eggs", "sugar", "vanilla", "mashed potatoes", "shortening", "flour", "baking powder", "nutmeg", "salt", "milk"]