For the dough mix yeast with sugar until liquid. Mix flour and 1 teaspoon salt in a large bowl. Add 300 ml lukewarm water and liquid yeast. Knead everything smooth with the dough hooks of the mixer. Cover and leave to rise in a warm place for about 1 hour.
For the herb butter wash the herbs, shake dry and chop finely. Peel garlic and chop finely. Knead butter, herbs and garlic. Season to taste with salt and pepper.
Knead the yeast dough briefly and roll out to a square on a little flour (approx. 48 x 48 cm). Spread the dough sheet with herb butter and cut into 6 strips (each approx. 8 cm). Cut the dough strips crosswise into 8 pieces (à approx. 6 x 8 cm).
Place a greased casserole dish (approx. 15 x 20 cm; approx. 5 cm high) at a slight angle. Place the dough pieces vertically close together in 2 rows in the baking dish. Cover and leave to rise for approx. 30 minutes. Bake in the preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer) for approx. 35 minutes.
Transport in the casserole dish and, if necessary, warm up at 150 °C for 20 minutes.