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Pick a Lemon and Remove the Seeds Cut a ripe lemon in half, and pick out the seeds with your fingers. You want to be careful not to damage the outer coating of the seeds. Rinse the seeds to clean ...

Combine cream cheese, lemon zest and juice ... Refrigerate, uncovered, until frosting hardens, about 15 minutes. Cut cake in half crosswise and stack halves. Spread remaining frosting on top ...

Using a metal spoon, carefully fold the mascarpone into the lemon curd mixture to create a marbled effect. When the sponge has cooled, cut the cake in half horizontally to create two thinner cakes.