Share a little about the materials, processes, and techniques used to create this cake Layers of colored isomalt, airbrush, gold leaf and clear isomalt make each grape. Wired onto a real grape stem. Leaf is isomalt painted with colored cocoa butter. What are you most proud of? It worked! I love the glass look - it was even more impressive in person. What advice would you give someone starting this project? I'll buy artificial flowers - or in this case grapes - from the craft store and tear them apart. The artificial flower makers have already done a lot of the pattern making and assembly and that gives us a good head start.