2 ripe bananas, unpeeled
1 ripe banana, peeled and cut in half lengthways
1 passion fruit, seeds scooped out
2 passion fruit, seeds scooped out
2 sprigs fresh rosemary
150g/5oz caster sugar
2 tbsp caster sugar, for dusting
75²µ/2½´Ç³ú cornflour
1 tbsp icing sugar
2 tbsp sesame seeds
vegetable oil, for deep-frying
25g/1oz butter, softened, for greasing
50ml/2fl oz ready-made vanilla custard, plus extra to serve
3 free-range egg whites
2 scoops good-quality ready-made vanilla ice cream