Battenberg cake
When cut in open one can see four more squares alternately coloured pink and yellow. These coloured sections are made by dyeing half of the cake mixture pink, and half yellow, then cutting each resultant sponge into two long, uniform cuboids, and joining them together with apricot jam, to form one cake. Established variations are for coconut flavouring to the sponge cake and lemon curd or raspberry jam in place of apricot jam.