What flavoring option enhances the taste of fillet medallions?

The flavoring option that enhances the taste of fillet medallions is peppercorn sauce. This sauce is specifically designed to complement the rich and tender nature of fillet medallions with its creamy texture and a robust flavor, featuring cracked peppercorns that add heat and depth. The combination of flavors in the peppercorn sauce balances nicely with the steak, enhancing its natural juiciness and savory profile without overpowering it.

Other options, such as cheddar cheese, barbecue sauce, and tartar sauce, do not traditionally pair as effectively with fillet medallions. Cheddar cheese may not provide the right flavor contrast, while barbecue sauce is typically associated with more casual, grilled dishes and may overshadow the sophistication of the steak. Tartar sauce is primarily a seafood accompaniment, making it an unlikely match for beef dishes. Thus, peppercorn sauce emerges as the ideal choice for elevating the overall dining experience with fillet medallions.