Cut the steak into 3/4-inch cubes and arrange on platter. Fill a fondue pot half full with vegetable oil.
Heat on stove and transfer to burner. To serve, the meat is picked up with fondue fork and immersed into hot oil until cooked to desired doneness. Once cooked, the meat is dipped into accompanying sauces.;
Combine all ingredients in a food processor and pulse 2 or 3 times. Adjust seasoning. Chill the sauce, covered, for at least 2 hours and up to 3 days.