Share a little about the materials, processes, and techniques used to create this cake Chocolate Smash Cake with root beer flavored Buttercream frosting. Root Beer flavored cupcakes w/Root Beer Buttercream frosting, Some cupcakes topped with white chocolate Dominos & chocolate sprinkles and with Marichino Cherries. The number 2 is white chocolate. Bendy straws cut to size. What are you most proud of? The look of the smash cake....it actually looked like the foam was overflowing. What advice would you give someone starting this project? Root Beer flavoring is very strong so add tiny bits at first. You really just want a hint of flavoring You can always add more if needed.