- 1 cup soy sauce
- 3/4 cup balsamic vinegar
- 1 (1 1/2-pound) skirt steak
- salt to taste
- Preheat an outdoor grill for high heat, and lightly oil the grate.
- Whisk soy sauce and balsamic vinegar together in a large glass or ceramic bowl. Add skirt steak and turn to evenly coat. Cover the bowl with plastic wrap, and marinate in the refrigerator, 30 to 45 minutes.
- Remove skirt from the marinade, and shake off excess. Discard remaining marinade. Season steak with salt.
- Cook steak until it begins to firm and is reddish-pink and juicy in the center, 3 to 6 minutes per side. An instant-read thermometer inserted into the center should read 130 degrees F (54 degrees C).