Watergate Salad

This salad/dessert has been at almost every family gathering I can remember.  So good!

Mix 1 Pkg Pistachio Flavor Instant Pudding mix (dry) with 20 can of crushed pineapple-juice and all.

Fold in 1 cup marshmallows and half a container of Cool Whip topping- or more depending on how creamy you like it.  Chill and enjoy!