Pistachio Cake
["1 pkg. white cake mix", "1 pkg. instant pistachio pudding", "4 egg whites", "1/2 c. salad oil", "1 c. club soda", "1/2 c. chopped walnuts"]
["Combine all ingredients well.", "Pour into well-greased tube pan.", "Bake at 350\u00b0 for 50 to 55 minutes."]
["white cake mix", "instant pistachio pudding", "egg whites", "salad oil", "club soda", "walnuts"]