French Buttercream
Editor's note: Use this French Buttercream to make Allison and Matt Robicelli's Tarte Bourdaloue and Chocolate Peanut Butter Pretzel cupcakes. This is it—the star of the show, the main event, the most important part of our cupcakes—buttercream! As this is French buttercream, this is tres, tres serious. You will pay attention, follow along, and execute these directions! C'est Sérieux!