Chocolate Merveilleux

Whip the meringue. Whip the pasteurized egg whites to soft peaks, add the caster sugar gradually and continue until the meringue is glossy and forms stable peaks; fold in the sifted icing sugar. Use Stand mixer and large bowl. Time: 15 minutes. Temperature or condition: cool room. Gradual sugar addition builds a stable foam for dry discs. Use pasteurized egg whites and clean grease-free equipment. The meringue forms glossy stable peaks that hold upright and the icing sugar is incorporated without dry pockets.

Pipe equal discs. Pipe sixteen 7 cm discs of equal thickness on two lined trays. Use Piping bag, 12–15 mm plain nozzle, two lined trays. Time: 15 minutes. Temperature or condition: room temperature. Equal size makes paired cakes stable and gives consistent drying. Keep trays level to avoid misshapen discs. All 16 discs are close to 7 cm wide with flat enough tops to pair after drying.

Dry the meringues. Dry the meringue discs at low temperature until crisp and easy to release from the paper. Use Oven. Heat: 90 °C oven. Time: 90 minutes. Temperature or condition: 90 °C. Low drying removes moisture while limiting colour. Avoid opening the oven repeatedly because temperature swings can crack the discs. The discs release cleanly from the paper, feel dry at the base and remain pale rather than deeply browned.

Make chocolate cream. While the meringues dry, heat 120 ml of the cream just to steaming, pour it over 90 g chopped dark chocolate, stir smooth, then blend in the remaining 230 ml cold cream. Use Small saucepan and heatproof bowl. Heat: medium-low. Time: 3 minutes. Temperature or condition: cream steaming, not boiling. A smooth emulsion gives the chilled cream an even chocolate flavour. Keep the remaining cream refrigerated until it is added. The chocolate is completely melted and the cream mixture is glossy and homogeneous with no unmelted pieces.

Chill the cream. Chill the chocolate cream for 120 minutes while the meringues finish drying and begin cooling; this chilling overlaps the oven and cooling schedule. Use Covered bowl in refrigerator. Time: 120 minutes concurrent chilling. Temperature or condition: 4 °C or colder. Cold cream whips more reliably and holds the cake coating. Keep the cream at 4 °C or colder. The cream mixture is refrigerator-cold and slightly thickened before whipping.

Cool the discs. Cool the meringue discs completely on racks. Use Wire racks. Time: 45 minutes. Temperature or condition: cooling. Warm meringue would melt the whipped cream. Do not assemble cream onto warm meringue. The discs are completely cool, crisp and no longer give off residual warmth.

Whip to firm peaks. Whip the chilled chocolate cream to firm but smooth peaks, stopping before it becomes grainy. Use Stand mixer with whisk. Time: 10 minutes. Temperature or condition: cold. Overwhipping can split the high-fat chocolate cream. Keep bowl and cream cold throughout whipping. The cream holds defined peaks and spreads without slumping or looking grainy.

Assemble gently. Pair the discs, sandwich each pair with chocolate cream, coat the top and sides with the remaining cream and press on the measured chocolate shavings. Use Offset spatula and tray. Time: 5 minutes. Temperature or condition: cold. Gentle coating protects the fragile dried shells. Return finished cakes to refrigeration promptly. Each cake has two intact meringue discs, an even cream coating and adhered chocolate shavings without crushed meringue.

Set in the refrigerator. Refrigerate the assembled cakes to set before serving. Use Covered tray in refrigerator. Time: 30 minutes. Temperature or condition: 4 °C or colder. A short chill stabilizes the assembly. Keep perishable cream desserts refrigerated. The coating is set enough to handle and the cakes remain chilled and intact.