This paste sets hard so is excellent for modelling. Create gorgeous and funky flowers for your wedding cake ideal for a blue and silver wedding theme. Preparing the paste: The cocoa butter in the this modelling paste needs to be warmed by kneading to bring it to a workable consistency. The best way to do this is to cut the paste into small pieces and knead each of them separately as you knead the paste will go from hard to dry and crumbly and then to soft and malleable. Combine the small pieces when they are warm. 100g boxed 1.