Brats Dr Pepper Cake Brat is after my neice, she loves to make this cake also. This cake is so moist it's almost more pudding than cake. Also, you can replace the Dr Pepper with different flavored soda, and the vanilla pudding and German Chocolate cake with different flavors to make other cakes. For example strawberry soda and straberry cake and pudding mix for a Strawberry Soda Cake. The pudding will thicken the batter so make sure you mix it for about 5 min on med speed. I know it seems like a lot of liquid, but that's what makes the cake so moist. I've tried it, it's great! It's done when a tooth pick inserted in the middle comes out clean.