The icing on the cake the old days, an older female member of the family would take great pride in producing a traditional three-tier fruitcake that for the reception, Nowadays, however, most lrish couples visit their local baker and order a cake which is decorated with Irish themes such as swans or fairies. According to tradition, the couple save the top layer of the cake. They often store it in a tin and use it as the christening cake for their first baby.