Barry_Cooper published Great British Bake Off: How to make Mokatines

For tonight's technical challenge on the Great British Bake Off, Mary Berry really puts the bakers under pressure as they are given Mokatines.They are a coffee-flavoured genoise sponge filled with coffee buttercream and found in smart Parisian patisseries. This recipe is courtesy of Mary Berry's very own Baking Bible.Ingredients:40g (1 ½oz) butter3 large eggs75g (3oz) caster sugar65g (2 ½oz) self-raising flour1 level tablespoon of cornflourFor the crème au beurre moka:40g (1