Sieve the flour into a bowl. Crumble the yeast into it and mix it with milk and 1 teaspoon of sugar to the pre-dough. Leave to rise for about 20 minutes. Knead in remaining sugar, fat, egg yolk and citro-back.
Let it go for about 20 minutes. Stone dates and dice them finely. Mix with poppy seed bake, cinnamon, rum and double cream. Form dough into a roll, cut into 18 pieces, roll out oval. Spread the filling on top and roll up firmly.
Layer the dumplings in a greased pancake tin (2 litres capacity). Leave to rise until the dough has doubled. Bake in the preheated oven (electric oven: 200 ° C / gas: level 3) for 60-70 minutes.
Dust with icing sugar. Makes about 16 pieces.