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.