Season steak with salt. Place steak in a large ziploc bag or in a large container. Pour balsamic vinegar and soy sauce over steak. Marinate for at least 30 minutes, up to 8 hours (the longer the marinade, the strongr the flavor). Occasionally turn the steak while marinating to make sure every part of the steak soaks in the marinade.
Preheat grill to about 400 degrees. Place steak on grill and grill until it is done to your liking- we grill it until 145 which results in a medium-rare steak, about 8 minutes. Let rest at least ten minutes before slicing.
Notes
What can you serve this with? For dinner, I’ve served this with some roasted carrot fries and a salad. See below for the salad I served this with.