Martha Stewart joins Julia to bake a three-tiered wedding cake. She prepares the batter, bakes each layer in graduated diamond-shaped cake forms, and makes and chills enough vanilla-rum buttercream to ice the entire cake.

Martha Stewart completes the wedding cake by assembling the individual cakes that serve as building blocks. The "mortar" between layers is a baked crunchy almond and egg white wafer spread with apricot jam. Then she decorates with icing and candy fruit garnish.