500g/1lb 1½oz strawberries, plus extra to garnish
225g/8oz plain flour
100²µ/3½´Ç³ú semolina
100²µ/3½´Ç³ú caster sugar
2 tbsp caster sugar
25g/1oz demerara sugar
1½ tbsp port
225g/8oz butter, at room temperature
300ml/10½fl oz double cream, whipped to soft peaks
2 egg whites, whipped to stiff peaks
300ml/10½fl oz thick, natural yoghurt