Culpitt Cake Modelling Icing Paste - 100g Metallic Gold 5 "Easy to use - with patience!" Miss Osman 07 October 2019 I bought this product last year for a Christmas cake. I was a little wary as most reviews were negative, but it's very similar to silicone clay: you just need to be patient and work the paste until it's soft and pliable. Follow the instructions! It will be brittle and crumbly to begin with, but does go soft within a few minutes of kneading. I'm not a professional cake decorator by any means, but I could make this work! I'll definitely buy it again.