Beef Stroganoff

Ingredients

• 500 grams chuck steak, diced
• 300 grams mushrooms, sliced
• 1 large brown onion, sliced
• 50 grams butter, chopped
• 2 heaped tablespoons tomato paste
• 1 teaspoon garlic, finely chopped
• 1 teaspoon sweet paprika
• ¾ cup beef stock
• ½ x 200 gram tub Browns Sour Cream
• 2 tablespoons plain flour
• 3 teaspoons Thomy Mustard Mild
• ½ cup dry white wine (optional)
• Salt and Pepper to taste
• 2 tablespoons olive oil