Recipe from PorkBeInspired.com
1/4 cup olive oil
1 cup balsamic vinegar
3 tablespoons fresh rosemary, OR sage OR thyme
1 teaspoon garlic, chopped
salt and pepper, to taste
Combine oil, vinegar, and garlic with rosemary in a self-sealing bag. Add pork tenderloins and marinate them for 30 minutes in the refrigerator. Remove from marinade and discard remaining marinade. Season tenderloins with salt and pepper.
Grill over medium-hot fire, turning occasionally, for 15-25 minutes, until meat thermometer inserted reads 160 degrees F. Slice to serve.