Peel the onion and garlic and chop very finely. Mix the turkey with the onion, garlic, a small dash of beer, a little salt and pepper and set aside for a moment. Clean the mushrooms and slice or quarter them, cut the leek into rings. Heat half of the butter in a saucepan and briefly fry the meat in it. Take it out again and set it aside. Sweat the mushrooms and leek with the rest of the butter in a tall saucepan, deglaze with beer, bring to the boil briefly, then add the meat again. Add yoghurt, broth and parsley, bring to the boil, if necessary season again with salt and pepper. Put in the pasta, mix everything together, place in a baking dish and sprinkle with the cheese. In the oven at 180 ° C top / bottom heat for about 25 minutes, then leave to rest for a few minutes.