mix jelly powder and 1/2 l water in a small pot and let it swell for about 5 minutes
Peel the kiwi and cut into pieces. Peel clementines so that the white skin is completely removed. Cut crosswise into slices
Stir the sugar into the liquid and heat while stirring (do not boil!) until the sugar is dissolved
Divide the fruit between 4 glasses. Let the jelly cool down a little. Pour over it and put in a cool place for about 6 hours. Lightly whip up the sour cream and allow the vanillin sugar to trickle in
Decorate the jelly with a dash of sour cream and as desired with lemon balm and clementine corners