Wash the meat and dab dry. Wrap each with a slice of bacon. Clean, wash and slice the carrots. Peel, wash and cut kohlrabi into six pieces and cut into thin slices.
Bring the stock to the boil in a saucepan, add the vegetables, cover and cook over medium heat for about 10 minutes. In the meantime heat oil in a pan. Brown the meat in it and fry for another 8 minutes while turning.
Then season with salt and pepper. Add butter to the vegetables. Add cream, bring to the boil again. Stir in 60 g cheese and sauce thickener, bring to the boil again, season to taste with salt, pepper and sugar.
Pour into an ovenproof mould. Place the meat in it, sprinkle with 15 g of cheese. Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 15 minutes. Remove from the oven and serve garnished with chervil.