Step 5
Draw a rainbow design on some paper and use this as a template . Measure the drop point of the rainbow . Cut out the template and make sure it is the right size for your cake .
Step 6
Take approx . 400g of Dollar Sweets Ready to Roll White Fondant . Knead in a good amount ( approx . 3 teaspoons ) of Tylose powder . Tylose ( or CMC powder ) is a hardening agent that will make your rainbow nice and strong . Using a rolling pin , roll out the fondant to a thickness of about 6mm . I used rolling guides to ensure an even thickness . Place the template on top of the fondant , and using a scalpel blade , cut the rainbow shape .