Warm the milk slightly. Crumble yeast into it and dissolve. Stir with 50 g flour until smooth. Cover the pre-dough and let it rise in a warm place for about 30 minutes
Mix 6 egg yolks, 80 g sugar and 100 g fat. Mix 450 g flour, salt, cardamom and 1 tsp cinnamon. Knead everything with the pre-dough to a smooth dough. Cover and allow to rise for about 30 minutes
Melt 100 g fat. Mix 100 g sugar and 2 tsp cinnamon. Knead dough and roll out to a square (approx. 45 x 45 cm) on a little flour. Spread the dough with fat and sprinkle with cinnamon-sugar
Roll up, cut into approx. 20 finger-thick slices and place on 2 baking trays lined with baking paper. Whisk 1 egg yolk. Brush snails with it and sprinkle with 2 tbsp. sugar. Cover and leave to rise for about 30 minutes.
Bake in a preheated oven (electric oven: 225 °C/circulating air: 200 °C/gas: level 4) for 8-10 minutes until golden brown