8501370 Rainbow Dust Essentials Edible Glue - 25ml - Retail Packed EDIBLE-RD-GLUE-RP-25ml £1.49 Back in Stock Soon Rainbow Dust Edible Glue is great for use in all aspects of cake decorating. Paint it onto cakes to hold icing, sprinkles or cake decorations in place and use it when assembling models to secure individual pieces together. This Edible Glue is available in a 25ml pot. Retail Packed. Boxed 1.