Grilled Steak with Oil and Vinegar Marinade

Recipe Ingredients:
1 small Walla Walla or other sweet onion, diced
7 peeled cloves garlic
1/2 cup Spanish extra virgin olive oil
1/2 cup vinegar
1/2 cup soy sauce
2 tablespoons chopped fresh rosemary
2 tablespoons Dijon-style prepared mustard
2 teaspoons coarse sea salt
1 teaspoon fresh ground black pepper
2 lbs steak, can be tri-tip, flank, sirlion

Cooking Method:
Add diced onion, garlic cloves, olive oil, vinegar, soy sauce, chopped rosemary, mustard, sea salt, and fresh ground pepper in a blender or food processor. Process until smooth. Place steak in a large zip lock or resealable plastic bag. (A one gallon bag works well). Pour marinade over steaks in the bag and be sure all meat is covered. Zip up the bag and refrigerate for about 3 hours.
You can turn the bag over a time or two while meat is soaking in marinade for better coverage.

Preheat your grill for high heat.
Brush grill grates with oil. Remove steak from bag and let drip a few minutes on a platter. Discard marinade, and place steak on the prepared grill. Cook for 7 minutes per side, or to desired doneness.