Peel the kiwis, dice them coarsely and puree them with the chopping stick. Pass through a sieve. Beat egg whites, vanilla sugar and sugar until stiff. Bring water (two fingers wide) to the boil in a wide pot.
Using a tablespoon, place 8 dumplings on the hot water, cover and leave to stand for about 5 minutes. Take out the snow eggs with a skimmer and let them drip off on kitchen paper.
Fill the puree onto small plates and arrange 2 dumplings on each. Decorate with peppermint leaves as desired.