Hi I painted on chocolate with my recent sugar skull cake. I used pure melted coco butter and mixed in powers. Just use a little coco butter and keep adding powder until it is like paint. You need to keep it warm to stop the coco butter going hard again so I put my palette on a hot water bottle. When you have finished they all set but you can melt them again on your hot water bottle. I do most of my painting like this now as you can see on the cake I have just up loaded the dogs and paw prints are all painted with coco butter. Good luck x
Elizabeth Miles Cake Design