This is a really yummy recipe for grilled flank steak. Marinate it overnight for best flavor. It cooks up really fast. You basically just have sear it on both sides. You want it to have a slight pink line in the middle (this one could of come off the grill a bit sooner, but it was still good). Then you cut it on a pretty sharp angle. It's got really great flavor.
Cut the mean 1/4 inch deep cross grain, 1" apart and marinate. Sear on grill both sides, serve a little pink.
1/3 cup olive oil
2 cloves garlic, minced
2 TBSP. red wine vinegar
1/3 cup soy sauce
1/4 cup honey
1/2 tsp. pepper
As your grilling, lightly sprinkle on some kosher salt, if you like. I think the soy sauce gives it enough salt flavor, but I'm careful with salt.