Sweet Potato Cake
["1 1/2 c. cooking oil", "2 c. sugar", "4 eggs, separated", "4 Tbsp. hot water", "2 1/2 c. sifted cake flour", "1 tsp. vanilla", "3 tsp. baking powder", "1/4 tsp. salt", "1 tsp. ground cinnamon", "1 tsp. ground nutmeg", "1 1/2 c. grated raw sweet potatoes", "1 c. chopped nuts"]
["Combine oil and sugar; beat until smooth.", "Add egg yolks and beat well.", "Add hot water, then dry ingredients, which have been sifted together.", "Stir in potatoes, nuts and vanilla; beat well. Beat egg whites until stiff and fold in mixture.", "Bake in 3 greased 8-inch layer pans at 350\u00b0 for 25 to 30 minutes.", "Cool and frost."]
["cooking oil", "sugar", "eggs", "water", "cake flour", "vanilla", "baking powder", "salt", "ground cinnamon", "ground nutmeg", "sweet potatoes", "nuts"]