They've said it a zillion times Florida OG x F1Durban. F1Durban is a cross of Durban Poison and whatever F1 is. Kenny aka pieguy the strain they crossed the Duban with got them so high so fast like a jet plane that's why they call it F1. GDP x F1Durban is Cherry Pie. GSC and Cherry Pie have same parent. Who cares anyways as you will never know the truth or get to grow their real cookies. And all the pics I've seen of there cookies has no purple so Forum and Platinum must be bag seed or crossed with something else. We will never know the truth