The unglazed cake can be stored at room temperature for up to 3 days.
Vanilla paste is available at specialty food shops.
To pair with this supersweet cake, Sacha Baumann chose a wine that isn't sweet at all, Marco de Bartoli's Marsala Superiore Reserva. "It's sherry-like and nutty on the nose but completely bone-dry on the palate in a surprising way." A dry oloroso sherry like Lustau's Don Nuño would also work here.