Buttermilk Birthday Cake Quantities

Our answer

Nigella's Buttermilk Birthday Cake (from HOW TO BE A DOMESTIC GODDESS) is popular for birthday cakes as it works well in shaped cake pans, as well as round and square tins. The cake recipe should be enough to make a two-layer 8-inch (20cm) round cake with two 8-inch sandwich tins. In theory this should mean that you need a half quantity of the recipe for a 6-inch (15cm) cake and a quarter quantity for a 4-inch (10 cm) cake. For half an egg just use the yolk.

However cake scaling can be a bit tricky and we have not tested these quantities, so would very much suggest making test versions of this size in advance of making the full wedding cake. The cake freezes well un-iced so the sponge layers can also be made up to 3 months in advance and frozen, tightly wrapped in a double layer of clingfilm (plastic wrap) and a layer of foil. We would also mention that the cake is not robust enough to stack the tiers on their own, so you will need to use dowelling in the bottom and middle layers.