Making Modernist Ravioli can be a little tricky, until you get the hang of it. This silicone ravioli maker lets you make perfect spheres every time with no effort or learning curve. Simply fill the mold with your Reverse Spherification base liquid and pop it in the freezer. Once the liquid is frozen, take it out and drop the molded rounds into the setting bath. The setting bath will form a skin on the spheres and melt the liquid in the center. It couldn't be easier.