I know, I know, you're thinking what the heck is a Pig Picking Cake? Well, first I want you to set aside any hang-ups you may have about a cake that is not entirely made from scratch. Next, I want you to imagine for a minute that you are about to taste the best cake ever invented. Pig Picking Cake, as far as I can surmise, came from the Southern States and it's a flavourful explosion of butter pecan, mandarin oranges, crushed pineapple and Cool Whip. That's right, Cool Whip. It's because …