"The traditional wedding cake is a fruitcake, and the top tier is called the "christening cake", which is saved for the baptism of the couples first child. The cake is typically made of raisins, ground almonds and cherries and topped with special candies called marzipan."
"There is hardly a bride today who can't resist saving the top layer of her multi-tiered cake. Most couples freeze the cake with the intention of sharing it on their first wedding anniversary. The tradition has its roots in the late 19th century when grand cakes were baked for christenings. It was assumed that the christening would occur soon after the wedding ceremony, so the two ceremonies were often linked, as were the cakes. With wedding cakes becoming more and more fancy and elaborate, the christening cake quickly took a back seat to the wedding cake. When three-tiered cakes became popular, the top tier was often left over. A subsequent christening provided a perfect opportunity to finish the cake. Couples could then logically rationalize the need for three tiers --- the bottom tier for the reception, the middle tier for distributing and the top for the christening. As the time between the weddings and the christenings widened, the two events became disassociated, and the reason for saving the top tier changed. Regardless of the underlying reason, when the couple finally does eat the top tier, it serves as a very pleasant reminder of what was their very special day."