Watergate Salad
["1 (20 oz.) can crushed pineapple and juice", "1 1/2 c. small marshmallows", "1 (9 oz.) Cool Whip", "1 pkg. pistachio instant pudding", "chopped nuts, if desired"]
["Mix together and refrigerate."]
["pineapple", "marshmallows", "pistachio instant pudding", "nuts"]