Beef Paprikas

Yield:	6 Servings
Categories:	Meats, Main Dishes, Hungarian

4	tb	Unsalted butter
2	lg	Onions; chopped
1	lg	Green bell pepper; chopped
1	lb	Mushrooms, sliced
2	tb	All-purpose flour
1 1/2	tb	Paprika preferably Hungarian sweet
2 1/2	c	Beef stock =OR=- canned unsalted broth
1	tb	Tomato paste
3/4	c	Sour cream
3	tb	Chopped fresh dill
1 3/4	lb	Center-cut beef tenderloin (chateaubriand) Cut into 1/4-to 1/2-inch thick slices, slices halved lengthwise
1/4	c	Dry white wine
		Chopped tomatoes (optional)