Tragacanth gum is an essential ingredient in sugarpastes, also known as ready-to-roll icing, fondant icing or regal-ice for covering cakes and modelling. Tragacanth gum acts as an emulsifier, with water-binding properties that preserve pliancy and prevent the icing from cracking once the mass has dried and soldified.
The main component in many candies and gum bases is traditionally gum arabic. It is also employed as a coating and thickening agent.
In marshmallows and other foamy masses, gum arabic stabilizes the foam.