Heat the oven to 160C/fan and line a baking tray with parchment
Gather and weigh your ingredients
Whisk the whites until stiff peaks form. Add half the caster sugar and continue whisking until shiny, adding the remaining half and whisk through.
Using a spatula, gently mix in the cornflour and the vinegar, then spread the mixture over about ⅔ of the baking tray [roughly 19cm x 28cm] {7 1/2 x 11 inces} Even it out as much as possible so it is the same height all over.
Pop the meringue into the oven for about 20-25 minutes, or until golden and dry-ish to the touch. Remove the meringue by the parchment paper and cool on the wire rack.
Meanwhile, place the prepared strawberries into a bowl and add the icing sugar, zest and juice. Let the juices marinate for 30 minutes.