Strawberry and almond meringue roulade

Cooking ingredients

320g/11oz caster sugar, plus 2 tbsp for dusting

1 tsp cornflour, sifted

2 tbsp flaked almonds

50g/1¾oz ground almonds

3 tbsp icing sugar, plus extra to serve

pinch of sea salt

vegetable oil, for greasing

¼ tsp white wine vinegar