Wash the chives, shake dry and cut into fine rolls. Wash, peel and roughly grate the potatoes with a box grater. Wash, clean and roughly grate the fennel.
Heat the milk and sugar lukewarm in a saucepan. Stir in the potatoes and fennel. Mix the egg, salt, coriander seeds and olive oil with the potato and fennel milk.
Mix the flour and yeast in a mixing bowl. Process the potato and fennel mixture with the dough hook of the hand mixer into an even dough. Knead in the chives. Cover and let rise in a warm place for about 30 minutes until the volume has visibly increased.
Knead the dough again on a floured work surface. Shape 20 balls of the same size with floured hands and place on a baking sheet lined with baking paper. Let rise for another 15 minutes.
Pre-bake in a preheated oven at 220 ° C (convection 200 ° C, gas: setting 3-4) for 10 minutes, reduce the temperature to 180 ° C (convection 160 ° C, gas: setting 3) and finish baking in approx. 15 minutes .