I found this recipe clipping from the Vancouver Province dated May 21, 1997 while browsing through an old cookbook of mine it says it is from the Steak Lover's Cookbook; we made this sauce absolutely yummy!
Pat steaks dry. Lightly coat the steaks with the vegetable oil and set aside for 30 minutes.
In medium saucepan, whisk together the ketchup, Worcestershire sauce, paprika, mustard and vinegar; set aside.
Preheat the broiler or grill. Place the steaks on the broiler pan or grill and cook until seared and well crusted on one side, about 5 minutes. Turn the steaks. Season with salt and pepper to taste and cook on second side for 3 minutes for rare or 4 more minutes for medium. Remove from heat and let sit for 5 minutes.
For the sauce, place the ketchup mixture over very low heat and heat to just warm. Whisk in the butter pieces, one or two at a time. Whisk constantly; the butter should melt but not become separated. If butter melts to fast, remove from heat and continue whisking. Stir in the garlic and season to taste.
Carve steaks into 1/2 inch thick slices and divide among 4 - 6 warm plates. Spoon 2 tbsps. of sauce over each portion. Serve immediately. Serves 6.