Instructions: For marinade: Combine all ingredients except butter in a deep dish. Immerse trimmed steaks in marinade and refrigerate for 8 hours.

Pour marinade into a saucepan and bring to a boil, skimming off foam that rises to the surface. Reduce marinade by half.

Remove from heat. Strain through fine mesh strainer. When slightly cooled, whisk in butter, 1 piece at a time, until it is totally incorporated into sauce.

For steak: Grill steaks to desired doneness.

For chived potato and tomato: Rub potatoes with garlic, oil, salt and ground peppercorns. Lay flat on a sheet pan. Place potatoes on grill and grill on both sides until golden brown. In a large serving platter, overlap potatoes into a circle. Place tomato chunks on top of potatoes and sprinkle with chopped chives.

To serve: Lay sirloin steaks to one side of the chived potato and tomatoes.

Pour sauce around steaks.

If you would like to email yourself the recipe for later use, or share the recipe with your friends or family, enter the email addresses below and this recipe will be emailed to you and others as well.