Victorian Sponge Recipe via The Stone Soup. includes helpful tips for getting the correct batter consistency as well as how to substitute for self-rising flour. I'll be making this recipe open-faced with just one layer of sponge cake.
For the final technical challenge Mary Berry asked the bakers to make this simple sponge with homemade jam and buttercream – without a recipe. For this recipe you will need two sandwich tins, an electric mixer and piping bag fitted with plain nozzle.