Grease and line a Swiss roll tin with baking parchment ... Lay two sheets of parchment paper (cut a little larger than the size of the tin) on a work surface and sprinkle one with caster sugar.
You'll need larger sheets of parchment paper - the standard 30cm (12 inch) packs available in rolls in most supermarkets ... Place the packets on a baking sheet and bake at for 10 to 12 minutes.
Meanwhile, place a large sheet of baking parchment ... and then a layer of whipped cream. Gently roll it up again, carefully peeling away the paper underneath as you go. You can serve it straight ...