If you know your way around cuts of meat, you might balk at the initial directions here to first slice this flank steak with the grain. In this case, that means the long way, knife running parallel with lines of muscle fibers so clearly evident. But wait . . . there’s more! You are then instructed to cut each of those long pieces against the grain, into 1/2-inch thick slices.
1 1/2 pounds flank steak
1/2 teaspoon kosher salt, or more as needed
1/2 teaspoon freshly ground black pepper, or more as needed
6 ounces fresh ginger root
4 medium cloves garlic
3 tablespoons grapeseed or other neutral oil
2 tablespoons fish sauce
2 teaspoons honey
Cut the steak with the grain (lengthwise) into 3-inch wide sections, then cut those against the grain (crosswise) into ½-inch thick slices. Season the slices evenly with the salt and pepper.
Use a spoon to scrape away the peel from the ginger; you may find it’s easier to first cut apart a few smaller knobs to do this. Cut the ginger crosswise into thin coins. Trim the root ends of the scallions, then cut the scallions into 2-inch pieces. Chop or mince the garlic (your preference).
Heat 1 tablespoon of oil until shimmering in a 12-inch skillet over medium-high heat. Add half the meat in a single layer; cook for 2 to 3 minutes total, until well browned on both sides, turning the slices only once. Transfer to a plate. Repeat with another tablespoon of oil and the remaining meat.
Reduce the heat to medium; add the remaining tablespoon of oil to your now-empty skillet. Add the ginger and cook for 2 minutes, stirring, until lightly browned on some edges. Add the garlic and cook for 20 seconds, stirring, until fragrant.
Stir in the scallions, fish sauce and honey, then return the all the meat and its accumulated juices to the pan. Cook for about 2 minutes, stirring occasionally, until the sauce in the pan is slightly thickened and the stir-fry mixture is evenly coated and warmed through.
Taste, and add more salt and/or pepper, as needed. Serve hot.