Grape-Nut Puff Pudding
["4 Tbsp. butter", "1 c. sugar", "2 eggs, separated", "3 Tbsp. lemon juice", "1 Tbsp. flour", "4 Tbsp. Grape-Nuts", "1 tsp. lemon rind", "1 c. milk"]
["Mix all ingredients together (except egg whites) and beat well.", "Fold in beaten egg whites.", "Pour into a buttered casserole and place in a pan of hot water.", "Bake at 325\u00b0 for 1 hour and 15 minutes.", "This has been a long time favorite."]
["butter", "sugar", "eggs", "lemon juice", "flour", "Grape-Nuts", "lemon rind", "milk"]