This is a very simple but delicious marinade. The balsamic vinegar gives the grilled steaks a deep, rich color and flavor which nicely compliments the natural flavor of the steaks. Bon Appetit, July 1998.
- Puree vinegar, oil, shallots and rosemary in blender until almost smooth. pour into 13x9x2 inch glass baking dish. Add steaks; turn to coat with marinade. Cover and refrigerate at least 6 hours and up to 1 day, turning steaks occasionally.
- Prepare barbecue (medium-high heat). Remove steaks from marinade; sprinkle with salt and pepper. Grill steaks to desired doneness, about 6 minutes per side for medium-rare.