UPD Worried about teetering cakes? Lots of thin, stacked layers are more structurally sound than a few thick layers glued together with icing. So, here, citrus syrup-soaked cakes and creamy filling are tucked into plastic wrap-lined pans, ensuring straight sides and a flat base.
Nervous about drooping frosting the day of the wedding? These cakes freeze overnight and gently come to temperature on the big day, which helps keep the finish cool and in place. And, because there’s no butter in the batter — the cakes are leavened with billowing egg whites — the layers don’t get crumbly and dry as they thaw under the sturdy Swiss meringue buttercream.