Place half of the sponge pieces into the base of a large serving bowl. Drizzle over ¼ cup limoncello, brandy or sherry. Cover with one-third of the drained Wattie's Peaches and half of the mascarpone custard. Repeat the layers, finishing with the mascarpone custard. Cover with plastic wrap and refrigerate for 2-3 hours for the flavours to blend.