- Make custard and cool.
- In another bowl, place chicko, apple and grapes and toss them in lime juice.
- In a separate bowl, whisk egg whites until stiff and gently fold in the custard and vanilla essence until well mixed.
- In tall glasses, alternately layer the chopped fruit, banana puree and custard mixture, finishing with custard on top.
- Chill in the refrigerator for 20 minutes.
- Decorate with chocolate flakes and serve.