Directions
<ol class="no-list-style"><li class="MethodStepper"><h4 class="step-title">Step 1</h4>Begin by preparing your champagne reduction for the buttercream. Pour 150ml champagne into a small saucepan and simmer over medium-low heat until reduced to about 4 tablespoons (approximately 10-15 minutes). The reduction concentrates the champagne flavor while removing the alcohol. Set aside to cool completely.</li><li class="MethodStepper"><h4 class="step-title">Step 2</h4>Preheat your oven to 180°C. Grease and line three 20cm round cake tins with parchment paper. In a medium bowl, whisk together the flour, baking powder, and salt until well combined.</li><li class="MethodStepper"><h4 class="step-title">Step 3</h4>In the bowl of a stand mixer fitted with the paddle attachment, cream the butter and sugar on medium-high speed for 4-5 minutes until pale and fluffy. This extended creaming process creates tiny air pockets that help your cake rise and achieve a tender crumb. Add the vanilla extract and mix to combine.</li><li class="MethodStepper"><h4 class="step-title">Step 4</h4>In a separate bowl, lightly whisk the egg whites until just broken up but not foamy. With the mixer on low speed, add the egg whites to the butter mixture a little at a time, allowing each addition to incorporate before adding more. This prevents the emulsion from breaking, which would result in a heavy cake.</li><li class="MethodStepper"><h4 class="step-title">Step 5</h4>Alternately add the flour mixture and milk to the batter, beginning and ending with the flour (three additions of flour, two of milk). Mix on low speed just until each addition is incorporated, then stop. Over-mixing develops gluten, which toughens the cake.</li><li class="MethodStepper"><h4 class="step-title">Step 6</h4>Divide the batter evenly between the prepared pans, using a digital scale for precision if available. Smooth the tops with an offset spatula. Bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean and the cakes spring back when lightly touched. The cakes will be a light golden color.</li><li class="MethodStepper"><h4 class="step-title">Step 7</h4>While the cakes bake, prepare the champagne syrup. Combine 200ml champagne and 100g sugar in a small saucepan over medium heat. Stir until the sugar dissolves, then bring to a gentle boil. Reduce heat and simmer for 5 minutes until slightly thickened. Remove from heat and cool completely.</li><li class="MethodStepper"><h4 class="step-title">Step 8</h4>Allow the cakes to cool in their pans for 10 minutes, then turn out onto wire racks to cool completely. Once cooled, use a serrated knife to level the tops of each cake if needed, creating flat surfaces for stacking.</li><li class="MethodStepper"><h4 class="step-title">Step 9</h4>For the champagne buttercream, beat the softened butter in a stand mixer with the paddle attachment on medium-high speed for 5 minutes until very pale and fluffy. Gradually add the sifted icing sugar with the mixer on low speed, then increase to medium speed and beat for 3 minutes until smooth and creamy.</li><li class="MethodStepper"><h4 class="step-title">Step 10</h4>Add the cooled champagne reduction, vanilla extract, and pinch of salt to the buttercream. Beat for another 2 minutes until light and fluffy. If the buttercream seems too stiff, add 1-2 tablespoons of cream to reach desired consistency.</li><li class="MethodStepper"><h4 class="step-title">Step 11</h4>To assemble the cake, place one layer on a cake board or serving plate. Using a pastry brush, generously brush the top with champagne syrup, allowing it to soak in. The syrup not only adds flavor but keeps the cake beautifully moist.</li><li class="MethodStepper"><h4 class="step-title">Step 12</h4>Spread an even layer of buttercream (about 1cm thick) over the soaked cake layer. Place the second cake layer on top and repeat the process with the syrup and buttercream. Add the final cake layer, brush with syrup, then apply a thin crumb coat of buttercream over the entire cake. Refrigerate for 20 minutes to set this initial layer.</li><li class="MethodStepper"><h4 class="step-title">Step 13</h4>After chilling, apply the remaining buttercream to the cake, creating a smooth finish with an offset spatula or bench scraper. Return the cake to the refrigerator while you prepare the champagne glaze.</li><li class="MethodStepper"><h4 class="step-title">Step 14</h4>For the glaze, place the white chocolate in a heat-proof bowl. Heat the champagne and cream in a small saucepan until just simmering, then pour over the chocolate. Let stand for 1 minute, then whisk until smooth and glossy. Allow to cool until slightly thickened but still pourable (about 10-15 minutes).</li><li class="MethodStepper"><h4 class="step-title">Step 15</h4>Remove the cake from the refrigerator and slowly pour the glaze over the top, encouraging it to drip attractively down the sides. If desired, decorate with gold sprinkles, edible gold leaf, or fresh berries. Return to the refrigerator to set the glaze for at least 30 minutes.</li><li class="MethodStepper"><h4 class="step-title">Step 16</h4>For the best flavor and texture, remove the cake from the refrigerator 30-60 minutes before serving to allow it to come to room temperature. This gives the cake a chance to soften and the champagne flavors to fully bloom. Store any leftover cake in an airtight container in the refrigerator for up to 3 days.</li></ol>