Peel and finely crush 1 clove of garlic, mix with the mustard and the herbs, and season with pepper. Roll out the bread dough thinly to at least double the length and width of the Kasseler. Rub the Kasseler thoroughly with the mustard-herb mixture on all sides, then wrap it in the bread dough. Place it on a coated baking sheet with the overlapping side of the dough facing down and steam in the combi steamer. Preheat to 220 degrees, then cook for 10 minutes at 210°C and subsequently continue cooking until a core temperature of 78 °C is reached at 170°C convection heat.