Equipment and preparation: for this recipe you will need a freestanding mixer or electric whisk and a sugar thermometer. Prepare a 20cm/8in square baking tin 4cm/1½in deep by lining it with ...

Measure one-third of the cake ingredients into a large bowl and whisk using an electric hand whisk for 2 minutes. Divide the mixture into 2 bowls and add some food colouring to each bowl (two ...