Sour Cream Pound Cake
["1 c. butter", "1 (8 oz.) sour cream", "3 c. plain flour", "1/4 to 1/2 tsp. salt", "3 c. sugar", "6 eggs, separated", "1/4 tsp. soda", "1 tsp. vanilla"]
["Cream butter and sugar.", "Add egg yolks, one at a time, beating well after each.", "Add sour cream.", "Add 1 cup flour.", "Beat egg whites until stiff; fold into mixture.", "Add remaining flour, salt, soda and vanilla.", "Bake in 4 layers for 25 minutes at 350\u00b0 or in a tube pan for 1 hour and 15 minutes."]
["butter", "sour cream", "flour", "salt", "sugar", "eggs", "soda", "vanilla"]