Clean and sanitize the mushrooms. Chanterelles and chestnuts wash and clean. Larger mushrooms may need to be halved. Wash meat, dab dry and cut into strips
Heat 2 tablespoons of oil in a large, coated frying pan, sear meat in portions all around. Season with salt and take out. Heat 3 tablespoons of oil in the pan. Fry the mushrooms in portions for about 4 minutes while turning, season with salt and remove. Heat 2 tbsp. butter in a frying pan, sauté the flour while stirring. Deglaze with stock and wine, simmer for about 5 minutes
In the meantime, drain green pepper in a sieve. Wash the chives, dab dry and, except for a little bit for garnishing, cut into fine rolls
Stir the sour cream with a whisk into the no longer boiling sauce. Then add green pepper, mushrooms, meat and chives to the sauce, warm up briefly. Season to taste with salt and nutmeg. Serve and garnish with chives if necessary. Butter noodles taste good with it.