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 20cm/8in sandwich tins, an electric mixer and piping bag fitted with plain nozzle.
Fancy flump marshmallow ropes from Meringue Girls: Everything Sweet are super fun to make. Marshmallows are made exactly the same way as an Italian meringue - adding hot sugar syrup to stiff egg whites - but with the addition of gelatine to make them set. We suggest making this with friends, as the marshmallow mixture sets quite quickly and you need a few hands on deck to pipe the ropes before it does. Good messy fun.