In this recipe by Chef Bryan Voltaggio, a balsamic vinegar-based marinade gives a flavor boost to hanger steaks.    Ingredients:  For the steaks:  1/2 cup balsamic vinegar  2 garlic cloves, thinly sliced  3 shallots, thinly sliced  1 bay leaf  1 tsp. coriander seeds  2 fresh thyme sprigs  2 cups extra-virgin olive oil  Malt vinegar sea salt, to taste  Freshly ground pepper, to taste  4 lb. hanger steaks, fat trimmed