Jewish Coffee Cake
["1 pt. sour cream", "1 tsp. sifted baking soda", "1/2 lb. butter", "4 eggs", "2 c. sugar", "1 tsp. vanilla", "4 c. sifted flour", "2 1/2 tsp. baking powder", "1 tsp. salt", "1/2 c. sugar", "1/2 c. nuts", "2 tsp. to 2 Tbsp. cinnamon to taste"]
["Preheat oven to 350\u00b0.", "Mix together sour cream and baking soda and set aside."]
["sour cream", "baking soda", "butter", "eggs", "sugar", "vanilla", "flour", "baking powder", "salt", "sugar", "nuts", "cinnamon"]