To make Sage Butter, in a small nonreactive bowl mix together butter, sage, garlic and vinegar with a fork until well blended. (Butter can be prepared 1 day in advance. Place in a baggie. Bring to room temperature 45 minutes or longer before using.) This is so good I like to make extra to serve or use on sandwiches.
Bring to room temperature 30 mins before cooking.
Preheat grill for hot fire. Oil grill. Pat steaks dry with paper towel, slat and pepper them on both sides.