2 tbsp lemon juice
3 oranges
90²µ/3¼´Ç³ú semolina
125g/4½oz golden caster sugar
440²µ/15½´Ç³ú caster sugar
½ tsp vanilla extract
100g/3½oz unsalted butter, melted, plus extra for greasing
3 free-range eggs, separated
7 sheets filo pastry
1 litre/1¾ pint full-fat milk, warmed