First make the curd - Place the eggs, egg yolks, sugar, and passionfruit and lemon juice in a medium saucepan over medium heat. Cook, stirring, for 2 minutes or until the sugar has dissolved. Gradually add the butter, stirring continuously, until melted. Reduce the heat to low and cook for a further 6–8 minutes or until the curd has thickened. Makes 2 cups (640g). Allow to cool in the fridge completely. This step can be made the day before.