Why settle for a bar of boring old regular chocolate when you can chow down on the holographic variety instead? Morphotonix, a company based in Lausanne, Switzerland, has developed a way to imprint holograms on to chocolate – without using additives. Morphotonix etches the required structure into a master mould made from metal. This is then used to make plastic moulds that in turn shape the chocolate. Both dark and milk chocolate can be used, though the complex physics and chemistry of microstructures means the hologram won’t form on some varieties. “We have been testing it with many types of chocolate. Sometimes it works great and sometimes no matter how hard we try it doesn’t mould,” says Morphotonix CEO Veronica Savu.