Cake decorators often affix embellishments, such as sugar flowers, edible pearls or fondant accents, to their creations to make them extravagant and unique. There are several edible options for gluing edible decorations to cakes, including gum-based glues, ready-made glue and royal icing. Most of the ingredients needed to make your own edible glue can be purchased at baking speciality shops. Use a fine paintbrush to apply the glue with precision.
Gum Arabic Glue
Gum Arabic is commonly used as an emulsifier in gummy candies, marshmallows and coated confections. In baking, it can be used to make gum paste and fondant. To make an edible glue, mix 2 teaspoons of gum Arabic powder with a quarter cup of water.
Tylose Powder Glue
An alternative to gum powder, tylose powder can be mixed with water to form a sweet, nearly-transparent edible glue. Combine a quarter teaspoon of tylose powder with 2 tablespoons of warm water. Stir the mixture with a fork to break up the lumps as much as possible. Cover with cling film and refrigerate overnight. Add more water or powder to the mixture if you wish to change the consistency.
Royal icing is stiff and becomes hard upon drying. It is useful when gluing heavy objects together, such as the walls of a gingerbread house. It is white and not transparent. You can make your own royal icing using pasteurised egg whites, vanilla and confectioner's sugar.