Banana Cake
["1/2 c. shortening", "2 egg yolks", "4 Tbsp. sour milk", "1 tsp. vanilla", "1 1/2 c. sugar", "1 tsp. soda", "1 2/3 c. flour", "1/4 tsp. salt", "2/3 c. mashed bananas"]
["Mix together first 4 ingredients.", "Sift together sugar, soda, flour and salt.", "Add to first mixture and beat.", "Then add the mashed bananas and fold in 2 stiffly beaten egg whites.", "Bake about 1 hour at 350\u00b0."]
["shortening", "egg yolks", "sour milk", "vanilla", "sugar", "soda", "flour", "salt", "mashed bananas"]