Beef Stroganoff III

Ingredients

• 2 pounds beef chuck roast
• ½ teaspoon salt
• ½ teaspoon ground black pepper
• 4 ounces butter
• 4 green onions, sliced (white parts only)
• 4 tablespoons all-purpose flour
• 1 (10.5 ounce) can condensed beef broth
• 1 teaspoon prepared mustard
• 1 (6 ounce) can sliced mushrooms, drained
• ⅓ cup sour cream
• ⅓ cup white wine
• salt to taste
• ground black pepper to taste