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To ensure the ice cream maintains its shape, place the cut slabs on parchment or wax paper and freeze them until they firm up again. This step is crucial because softened ice cream in contact with a warm cake would melt too quickly, ruining the presentation and structure of the cake.
Assembling the Cake
Once the cake is cool and the ice cream slabs are firm, it's time to assemble. Place your serving tray upside down and gently turn the cake onto it, then peel away the parchment paper or cake liner. The cake may be slightly larger than the ice cream, so trim off any excess edges to create a perfect fit.