Preheat the oven to 190°C, fan 170°C, gas 5. Lightly oil a 25cm x 35cm Swiss roll tin and line with baking parchment so it stands just above the tin.
Using a hand-held electric whisk, whisk the egg whites with the lemon juice until soft peaks form, then whisk in half of the sugar until you have stiff peaks. Using a metal spoon, fold in the remaining sugar, a little at a time, until combined, and then fold in the cream of tartar and vinegar. Spread the meringue mixture evenly in the prepared tin.
Bake for 15-20 minutes. Remove from the oven and let cool in the tin. Turn out onto a piece of baking parchment that’s dusted with a little icing sugar. Gently ease away the lining parchment from the base of the roulade.
Spread the lemon curd over the roulade, top with the whipped cream, leaving a 1cm border. Sprinkle with the raspberries.
With the shorter end facing you, roll up the roulade (don’t worry if it cracks!). Transfer to a serving dish, seam-side down. Drizzle the roulade with a little extra lemon curd and decorate with the extra raspberries and the mint leaves. Dust with icing sugar to serve.
Please note: the most up-to-date allergy information is always on the product packaging.