Claire, owner of London-based bakery Violent Cakes, will incorporate the bright flavours of spring into the cake before covering it with buttercream and decorating with fresh flowers.
The lemon elderflower flavour is not very traditional for a cake, and is traditionally used in drinks and cocktails.
If you need more of a visualisation of what Meghan and Harry's cake will look like, check out some of Claire's work below. Beware, the photos will make you hungry!