BRAISED BEEF 'STROGANOFF'

Steps:

• Preheat the oven to 300 degrees. Season the beef all over with salt and pepper. Heat the oil in a stew pot over high heat. When hot, add the beef and cook, in batches if needed, until browned. Transfer to a plate.
• Reduce heat to medium-low, add the onions and cook, covered, stirring occasionally, until the onions are softened, about 15 minutes. Add the white wine, 2 cups of water and a pinch of salt, scraping the caramelized bits stuck to the bottom of the pan. Return the beef and its juices to the pot and bring to a boil. Cover, place in the oven and cook until the beef is tender, about 2 1/2 to 3 hours.
• Transfer the beef and 1/4 of the onions to a large plate. Purée the remaining onions and cooking liquid in a blender with the mustard and yogurt, and season to taste with salt and pepper. Return the beef and the reserved onions to the cooking pot and stir in the sauce.
• Melt the butter in a skillet over medium-high heat. Add the mushrooms and sauté until tender. Season with salt, and add to the pot. If you choose, serve over buttered egg noodles.