Soak the gelatin in cold water for about 20 minutes. Bring glucose, sugar, and water to a boil until the sugar is dissolved. You can stir gently with a spatula.
Add condensed milk, and remove from the heat. Add the gelatin and stir carefully into the mixture to avoid creating air bubbles.
Chop the chocolate and put it in a tall jug, then add the warm liquid.
Add the white food coloring and use your immersion blender at a slight angle in the jug very slowly to avoid bubbles. It’s important to keep the immersion blender still and not to move it up and down, as this creates bubbles.
Now blend the glaze until it’s smooth.
You are now ready to use the color you choose, blend again until you achieve the color you want. Then remove air bubbles with a spatula and let it cool to 35 degrees Celsius (95 degrees Fahrenheit). You can also pour the glaze through a sieve so the bubbles disappear.
Take your cake out of the freezer and place it on a wire rack with a tray underneath to collect the excess glaze. Pour the glaze over the frozen cake, preferably twice. If you see any bubbles, you can remove them with a needle.
You can create many beautiful effects with glaze, simply by adding different colors and pouring in patterns or scraping the cake’s surface in various ways. You can, for example, create a spiderweb effect with white colors, and much more.