Score steak lightly in diagonal pattern.
Sprinkle steak with salt and pepper and The Mortar and Pestle Burger and Steak Blend.
Place 1/4 cup of Olivewood Smoked balsamic vinegar and Espresso balsamic vinegar in a gallon ziplock bag.
Place steak in bag, release air and seal bag.
Place in refrigerator for 2 hours-overnight and allow to marinate.
Heat grill. Place steak on hot grill for 5 minutes. Turn steak over and allow to cook for 3-5 minutes. Check temperature and remove from grill when thermometer reads 130 degrees F in the thickest part.
Remove steak from grill and allow steak to rest for 5-10 minutes.
Slice steak against the grain into thin slices and serve.
Enjoy!