Fillet of beef with mulled wine gravy is a luxurious and flavorful dish that combines the tenderness of beef fillet with the rich and aromatic flavors of mulled wine. The beef fillet is seasoned with salt and pepper, then seared until browned. It is then roasted in the oven until cooked to the desired doneness. The mulled wine gravy is made by simmering red wine with spices, herbs, and beef stock until reduced and flavorful. This dish is perfect for a special occasion or a festive dinner.