The pressure mounts as host Scott Conant informs the remaining bakers they will be working with the world's most beloved ingredient - chocolate. In the Skills Challenge the bakers must create a perfect version of the glazed Austrian chocolate cake, the Sachertorte. The final Master Challenge is to create the Ultimate Chocolate Cake - an elaborately decorated cake for 100 people featuring chocolate decorations, three types of chocolate, and three flavors of chocolate bonbon, while using caramel as the required featured flavor.Guest judge and social media baking sensation Yolanda Gampp joins Marcela Valladolid and Jason Smithto determine which baker becomes earns the title of Best Baker in America, while walking away with $25,000!