Hersheys Decadent Dark Chocolate Cake 10 Stars! If you are looking for a chocolate recipe for Valentines Day look no further! This is an old Hersheys Chocolate recipe I know this is my Grandmother and my Moms old recipe. The twist is using the new powdered Dark Chocolate cocoa. This is one of the most MOIST cakes you will ever make. It is critical to use boiling hot water do not miss this step.