Slice the mango in half to the pit,then twist the halves to remove the flesh from the pit. Peel and coarsely chop the flesh. Put in a blender and process until smooth.

Peel the kiwifruit, then chop the flesh into small pieces and put in a bowl. Peel and chop the banana and add to the bowl. Add the lime juice and grated zest and toss to coat well.

Whisk the egg whites in a separate, bowl until stiff, then gently fold in the yogurt and vanilla extract until thoroughly mixed.

Alternately layer the chopped fruit, mango puree,and custurd mixture in a glass, finish with the yogurt on top. Cover and chill in the refrigerator for 15 minutes.