Coffee and Soy Marinated Flank Steak just may become one of your favorite ways to eat red meat. Who knew coffee could be such a great addition to a marinade?
Combine all ingredient in a large ziptop plastic bag, mixing them together well.
Add flank steak and marinate in the refrigerator for 6-8 hours.
Let flank steak sit at room temperature for 20 minutes before grilling.
Preheat grill with high heat. Remove flank steak from marinade and pat it dry with paper towels.
Grill for about 4 to 5 minutes per side. You want to serve flank steak on the rare side for best flavor and texture. When you press on it with your finger, it should not feel squishy, but you don't want it to feel firm either. It should have some give.
Let flank steak rest at least 10 minutes and then slice thinly against the grain with knife at a diagonal.