Wash the currants, drain well and pluck the berries from the panicles. Mix jelly powder and sugar in a pot. Add nectar and liqueur and mix. Heat (do not boil) while stirring constantly until the sugar is dissolved
Place 1/3 of the currants in glasses, pour in the liquid evenly and chill for at least 5 hours. Shortly before serving, add 1 1/2 tbsp yoghurt to each glass, decorate with the remaining currants and lemon balm
Waiting time approx. 5 hours