Watergate Salad
["1 large can crushed pineapple (unsweetened in own juice)", "1 pkg. pistachio nut pudding mix", "1 c. marshmallows", "1 small carton Cool Whip", "nuts (if desired)"]
["Mix pudding mix with undrained pineapple.", "Stir in remaining ingredients.", "Refrigerate overnight."]
["pineapple", "pistachio nut pudding", "marshmallows", "nuts"]