Hearty Beef Stroganoff

Ingredients

• 2 tablespoons olive oil
• 1 large onion, diced
• 500g beef strips
• 2 cloves garlic, minced
• 250g mushrooms, sliced
• 1/2 cup dry white wine
• 2 tablespoons tomato paste
• 1 teaspoon Worcestershire sauce
• 1 tbs Dijon mustard
• 1 cup sour cream
• 2 cups beef stock
• 250g fettuccine
• Salt and pepper to taste