Cut the panettone into thick slices. Melt the chocolate in a bowl over a pan of gently simmering water. Mix the melted chocolate into the chestnut purée, add Mascarpone and beat in well.

Bakers from Cossetta have never won the panettone world cup — or, at least, not yet. In late 2023, head pastry chef Jaime Martinez took first place at the U.S. qualifying tournament, which ...