Sour Cream Cake
["3 c. sifted flour", "1/8 tsp. salt", "1/4 tsp. soda", "2 sticks butter", "3 c. sugar", "6 eggs, separated", "1 tsp. vanilla", "1 tsp. lemon", "1 c. sour cream"]
["Sift together flour, salt and soda; set aside.", "Cream together butter and sugar until fluffy.", "Add egg yolks one at a time.", "Add vanilla and dry ingredients alternately with sour cream.", "Beat whites and fold into mixture.", "Bake at 300\u00b0 for 1 1/2 hours."]
["flour", "salt", "soda", "butter", "sugar", "eggs", "vanilla", "lemon", "sour cream"]