What's For Dinner?

I thought it might have been a fluke the first time I made this recipe a few weeks back. It was so good and the entire family loved it. Could it have been a fluke or will it be part of my go-to recipes from now on? I made it again last night and...drum roll please...it indeed was not a fluke. It's delicious, easy, and now a go-to recipe.

Soy-Marinated Flank Steak
Ingredients
1 cup soy sauce (I used the low sodium version)
1/4 cup packed light-brown sugar
3 tablespoons cider vinegar
1 tablespoon Worcestershire sauce
2 teaspoons Dijon mustard
1 teaspoon red-pepper flakes
1/4 teaspoon ground pepper
1 flank steak (about 2 pounds)
Vegetable oil, for grates

Directions

1. In a 9-by-13-inch baking dish, whisk together soy sauce, sugar, vinegar, Worcestershire, mustard, red-pepper flakes, and pepper. Place steak in dish and cover dish tightly with plastic wrap. Swirl dish so that marinade coats the top of steak. Refrigerate 1 to 2 hours, turning steak occasionally. (I marinate overnight to get more intense flavor and it's easier to come home from work and just grill!)
2. Heat grill to high. Remove steak from marinade, letting excess drip off. Pour marinade into a saucepan and simmer over medium-high heat until reduced by half, about 10 minutes.
3. Clean and lightly oil hot grates. Grill steak, covered, 6 minutes; turn, brush with glaze, and grill until medium-rare, 6 minutes more. Let rest 8 to 10 minutes before slicing.