Brown the meat in butter until well browned. Sprinkle with 2 tbsp. flour, and stir well. Add 2 – 3 cups of water and stir.
Add the two cubes of stock, the wine, and water to cover. Add carrots, onions and mushrooms, and simmer over very low heat, stirring, for 1 ½ to 2 hours. Check, and add water if necessary.
When done, whisk together the yolk, lemon, and sour cream. Add and stir well, just before serving.
Goes well with rice and good, crusty bread.
