• The mirror glaze must be used on a frozen mousse cake.
• If using sheet gelatin, soak it in very cold water for about 10 minutes to rehydrate it before starting the glaze. Squeeze it well before adding it to the hot mixture.
• When working with powdered gelatin, bloom it in the indicated amount of cold water at least 15 to 20 minutes before starting, then keep it in the refrigerator. This will create what is known as a gelatin mass.
• Prepare the syrup: Place the water, glucose syrup, and sugar in a saucepan.
• Heat until the mixture reaches 103°C (217°F), stirring occasionally without splashing the sides of the pan. If sugar splashes onto the sides, clean them with a damp pastry brush.
• Pour the hot syrup through a strainer over the sweetened condensed milk and food coloring, then add the squeezed gelatin (if using sheet gelatin) or the gelatin mass (if using powdered gelatin).
• The food coloring can also be added after blending, which makes it easier to divide the glaze into several portions and color them differently.
• Gently mix with a spatula, then pour the mixture over the chocolate placed in a tall, narrow container, such as a measuring jug or the container that comes with your immersion blender.
• Let it sit for about 1 minute, then gently stir with the spatula.
• Blend for 3 to 4 minutes using an immersion blender. This step is crucial. To avoid creating air bubbles, slightly tilt the container and keep the blender fully immersed at all times, lifting it only at the very end.
• You’ll notice that proper blending makes the mirror glaze shinier and more fluid.
• Pour the glaze through a fine-mesh sieve into an airtight container, then cover it with plastic wrap pressed directly onto the surface. Refrigerate until the next day.
• The next day, transfer the glaze to a saucepan and gently heat it to a maximum of 38 to 40°C (100 to 104°F), either using a double boiler or the microwave.
• If using a double boiler or microwave, remove the glaze regularly, stir, then return it to the heat. This helps control the temperature and ensures the glaze melts evenly without overheating.
• Note: If the glaze is almost completely melted at 35 to 36°C (95 to 97°F), it is perfect. The blending step will finish melting the remaining pieces, allowing you to reach the ideal pouring temperature more quickly.
• Pour the glaze into a tall, narrow pouring jug and blend with an immersion blender to remove any remaining air bubbles. The glaze will become smooth and ultra shiny, with a perfectly reflective, mirror-like finish.

What’s the Ideal Temperature for Using Chocolate Mirror Glaze?

• When the glaze reaches 33 to 34°C (91.4 to 93.2°F), remove the mousse cake from the freezer. The cake must be fully frozen to ensure the mirror glaze sets properly and holds a smooth, even finish.
• Note: The glaze can also be used at a slightly lower or higher temperature depending on the desired result. At 33 to 34°C, the texture is ideal, fluid enough to flow smoothly while still providing perfect coverage.

How to Glaze a Mousse Cake with Mirror Glaze

• Place the mousse cake on a wire rack or a small stand to elevate it. Set everything over a tray lined with plastic wrap to easily catch any excess glaze. Gently run your hand over the surface or use a paper towel to remove any traces of frost before glazing.
• Pour the glaze evenly over the cake, making sure it is fully covered. If needed, lightly run a spatula over the top in one smooth, quick motion to level the surface.
• Let the glaze drip naturally. Once it stops dripping, slide two long spatulas under the mousse cake and gently rub them against the rack with a back-and-forth motion to cleanly cut off the excess glaze.
• If the cake is elevated, trim any remaining drips using clean scissors or a sharp knife.
• Gently transfer the mousse cake to a serving platter or a gold cake board. Let it thaw in the refrigerator for at least 6 hours.
• If you’re short on time, the cake can also thaw at room temperature, but a slow defrost in the refrigerator will give you a more stable texture and cleaner finish.
• This ultra-shiny chocolate mirror glaze will elevate all your mousse cakes.