Instructions
- 1
Dacquoise: fold almond flour and powdered sugar into whipped whites. Spread thinly. Bake at 170°C until golden. Cut to fit mold.
- 2
Cremeux: heat cream, pour over yolks mixed with chocolate. Bloom gelatin, add. Pour into insert. Freeze.
- 3
Mousse: melt chocolate. Bloom and melt gelatin in warm cream. Fold in remaining whipped cream.
- 4
Assemble in dome mold: mousse, cremeux insert, dacquoise base. Freeze 12 hours.
- 5
Mirror glaze: heat all glaze ingredients to 105°C. Strain. Cool to 35°C stirring gently.
- 6
Unmold frozen cake onto wire rack. Pour glaze in one steady motion from center outward.
- 7
Refrigerate 4 hours. Transfer to plate with gold leaf garnish.
- 8
Let guests see the mirror reflection — this is the moment.
Baker's Tip
The glaze must be exactly 35°C — get a thermometer. Too warm and it runs off; too cold and it sets in lumps. Pour in one continuous motion without going back over areas already glazed. Bubbles can be popped with a blowtorch.
Frequently Asked Questions
What temperature does the mirror glaze need to be?
34-36°C (93-97°F) is the ideal range. Below 32°C it sets too quickly leaving a lumpy surface; above 38°C it is too runny and slides off. Use a digital instant-read thermometer — this is not a step where guessing is possible. The correct temperature is everything.
What is glucose syrup and can I substitute it?
Glucose syrup prevents the mirror glaze from crystallizing and gives it the ultra-glossy finish. Substitute with corn syrup or light golden syrup in equal amounts. Honey also works but adds its own flavor. Do not skip this ingredient — without it the glaze will turn matte and grainy.
How do I make the glaze truly jet-black?
Use black food gel coloring (not liquid) in addition to the cocoa powder. Add it gradually while the glaze is still above 50°C so it dissolves completely. The glaze appears very dark in the bowl but the true black color is most visible as a thin layer on the white foam of the mousse.
My glaze ran off the sides too fast — what happened?
The glaze was too warm. Cool it further, stirring gently, and test with a thermometer. Also ensure the cake is frozen solid — a partially thawed cake accelerates the glaze setting too fast and creates an uneven surface. The cake should feel like a block of ice when you glaze it.
About This Recipe
The most dramatic cake you will ever make — a perfect dome of chocolate mousse under a jet-black mirror glaze so reflective you can see yourself in it. Inside: almond dacquoise base, chocolate cremeux and dark chocolate mousse. Pure theatre.
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