I found this recipe a few years ago in one of my Everyday Food mags. It's become a family favorite. When we can't get to the BBQ, we cook the flank steak in a very hot iron skillet. Always delicious Vietnamese Steak Sandwiches 1 garlic clove, minced 1 teaspoon sugar 1/4 teaspoon red-pepper flakes 1 tablespoon rice vinegar 1 tablespoon water 2 carrots, grated 2 scallions, thinly sliced 1/2 cup packed fresh cilantro leaves 4 hero rolls 1 pound sliced Flank Steak with Lime …