Spoon the macerated strawberries over the mascarpone filling and drizzle with a third of the strawberry purée (reserve the rest). With the shortest side facing you, begin to roll up the sponge ...

Preheat the oven to 180°C (350ºF), Gas Mark 4. Grease a 33cm x 23cm (13in x 9in) Swiss roll tin and line it with nonstick baking paper. First make the cake. Whisk the eggs and sugar together ...