Instructions: In a large pot or Dutch oven pan heat the butter and oil over medium heat. Season the chicken with salt and pepper, add to the pot or Dutch oven and cook until brown on all sides. Do this in batches if necessary. When all the chicken is browned remove it from the pan, remove to a plate and set aside.

In the same pot or oven, add the mushrooms and onions and cook for 5 minutes, stirring often. Then add the sausage and cook for 2 minutes more. Return the chicken the pan, and then add chicken stock. Bring to a boil, reduce the heat, and simmer, covered for 30 minutes.

Ladle 3 cups of hot stock into a large bowl. Whisk in the cream, egg yolks, and vinegar. Transfer this mixture back to the Dutch oven or pot. Mix well and season with salt and pepper. Transfer to a serving plate and garnish with chopped parsley.

This recipe yields 12 to 15 servings.

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