Watergate Cake
["1 pkg. white cake mix", "2 small pkg. pistachio instant pudding mix", "3/4 c. cooking oil", "1/2 c. walnuts", "3 eggs", "1 c. club soda", "12 oz. cool whip", "1 1/4 c. cold milk"]
["Mix cake mix with 1 package of pudding, oil, walnuts, eggs and club soda. Bake at 350\u00b0 for 35 to 40 minutes in a 9 X 13 pan. After cake cools, dissolve remaining pudding mix in cold milk. Add cool whip and beat until thick. Spread on cooled cake and refrigerate to let frosting set. Serve chilled."]
["white cake mix", "pistachio instant pudding", "cooking oil", "walnuts", "eggs", "club soda", "cool whip", "cold milk"]