Introduction

This chocolate mirror glaze cake is a stunning dessert that combines a smooth, shiny glaze with rich, layered chocolate cake inside. Perfect for special occasions, the glossy finish creates an impressive centerpiece that tastes as good as it looks.

A smooth, round cake covered in a very shiny, dark chocolate glaze that reflects light like glass. The glaze is perfectly even and thick, covering the entire surface and sides of the cake. On top, there are a few small pieces of gold leaf scattered near one edge, adding a touch of elegance. The cake sits on a plain white plate, placed on a white marbled surface. The photo is captured close up, showing the glossy texture and rich dark color clearly. photo taken with an iphone --ar 4:5 --v 7

Ingredients

1 x 20cm / 8″ chocolate cake (2 layers) (see Note 1)
2 batches Dark Chocolate Ganache (see Note 2)
2 1/2 tbsp cold tap water
4 tsp gelatine powder (see Note 3)
2/3 cup water
2/3 cup cream (pure/regular whipping cream, better than thickened/heavy cream, see Note 4)
1 cup unsweetened cocoa powder, sifted (preferably Dutch processed, see Note 5)
1 cup + 2 tbsp caster/superfine white sugar (see Note 6)
Gold dust and gold leaf (optional decorations, see Note 7)

Instructions

Step 1: Refrigerate the cake layers for at least 1 hour until well chilled to make handling easier. Trim the cake layers to level them and frost the cake smoothly with dark chocolate ganache.
Step 2: After frosting, refrigerate the cake for at least 1 hour to set the ganache before applying the mirror glaze.
Step 3: Bloom the gelatine by placing 2 1/2 tbsp cold water in a small bowl, sprinkling the gelatine powder evenly over the surface, and mixing gently so all powder is wet. Let sit for 5 minutes until rubbery.
Step 4: In a medium saucepan, whisk the cocoa powder and 2/3 cup water until lump-free to form a paste.
Step 5: Add a splash of cream to the cocoa paste and stir to loosen. Then add the remaining cream and all the sugar, gently mixing without whisking.
Step 6: Heat the mixture over medium-high heat until it boils, then remove from heat immediately.
Step 7: Add the bloomed gelatine to the hot glaze and gently stir until fully dissolved and glossy. Some white foam is fine.
Step 8: Strain the glaze through a fine mesh strainer into a shallow bowl, pouring it carefully to minimize bubbles.
Step 9: Remove any bubbles by twisting the bowl rapidly to make bubbles gather in the center. Cover the glaze with cling wrap pressed to the surface to prevent skin formation and cool at room temperature for about 2 hours until it reaches 30°C (86°F).
Step 10: Just before glazing, strain the glaze again into a jug to remove any lumps or bubbles.
Step 11: Place the chilled cake on a rack over a tray to catch excess glaze.
Step 12: Pour the glaze over the cake starting at the center, moving in an expanding spiral to coat the top and sides smoothly. Pour in one steady motion for best results.
Step 13: Quickly pour extra glaze on any uncovered spots on the sides.
Step 14: Transfer the cake to a platter before the glaze sets (about 10 minutes).
Step 15: Use excess glaze and a warmed palette knife (heated gently or dipped in warm water) to fill any gaps or smooth out imperfections.
Step 16: To slice, dip a knife in warm water, wipe dry, and make clean cuts between the layers. Clean and warm the knife between each slice for neat pieces.

Tips & Variations

Use a regular whipping cream rather than thickened or heavy cream for the best texture in the glaze.
For an extra elegant finish, decorate with edible gold dust or gold leaf after glazing.
Pour the glaze from a low height to avoid bubbles forming in the shiny surface.
If you want to prepare the glaze in advance, it can be refrigerated overnight and gently warmed before use.

Storage

Store the glazed cake in the refrigerator, covered loosely with a cake dome or plastic wrap, for up to 3 days. Let it come to room temperature for about 30 minutes before serving. Reheat slices gently if desired, but avoid microwaving the whole cake to preserve the glaze’s shine.

How to Serve

The image shows a round cake with a smooth, shiny dark chocolate glaze covering the entire surface and sides evenly. The glaze is so glossy it reflects light softly. The cake sits on a white plate placed on a white marbled surface. On top, there are small pieces of delicate gold leaf sprinkled towards one side, adding a touch of luxury to the otherwise plain dark surface. The cake looks simple yet elegant with no other decorations or visible layers from the outside. Photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I prepare the mirror glaze a day ahead?

Yes, you can make the mirror glaze in advance. Refrigerate it overnight covered tightly, then gently warm it to about 30°C (86°F) and strain before pouring over the cake.

Why is my mirror glaze not shiny?

Shiny glaze depends on proper gelatin melting and minimal bubbles. Avoid vigorous stirring, strain the glaze well, pour from a low height, and cover it to prevent skin. If bubbles form, twist the bowl to gather them or skim off foam gently.