1 tsp lemon juice
12 small mint leaves
12 fresh raspberries
150²µ/5½´Ç³ú caster sugar
115g/4oz unsalted pistachios, blended to a fine powder
115g/4oz white chocolate with dried raspberries, melted
115g/4oz white chocolate, shaved with a knife
142ml/¼ pint double cream
3 free-range egg whites