1/2 cup mirin
2 Tbs. minced shallots
2 Tbs. minced fresh ginger
1 tsp. minced garlic
1 Tbs. plus 2 tsp. grapeseed oil
2 tsp. light miso
1/4 tsp. Asian hot sauce, such as Sriracha
1 1-3/4- to 2-lb. hanger steak, trimmed
Kosher salt and freshly ground black pepper
1/4 cup thinly sliced scallions
Position a rack in the center of the oven and heat the oven to 400°F.
Simmer the mirin, shallots, ginger, and garlic in an 8-inch skillet over medium heat until the mixture is syrupy and large bubbles start to form, about 5 minutes. Remove from the heat and whisk in 1 Tbs. of the grapeseed oil, the miso, and the hot sauce. Set aside.
Season the steaks generously with salt and pepper. Heat a 12-inch oven-safe skillet over high heat until very hot. Add the remaining 2 tsp. oil, swirling it until the pan is well coated. Cook the steaks, flipping once, until browned, about 4 minutes total. Using a pastry brush, spread the glaze evenly over the steaks, transfer to the oven, and roast until an instant-read thermometer inserted into the thickest part of the steak reads 130°F to 135°F for medium rare, about 4 minutes.
Transfer the steaks to a cutting board, let rest for 5 minutes, and then cut on the diagonal into 1/2-inch-thick slices. Pour any juice remaining in the pan over top and sprinkle with the scallions.
nutrition information (per serving based on 4 servings):
Calories (kcal): 460; Fat (g): 22; Fat Calories (kcal): 200; Saturated Fat (g): 7; Protein (g): 43; Monounsaturated Fat (g): 9; Carbohydrates (g): 12; Polyunsaturated Fat (g): 5; Sodium (mg): 570; Cholesterol (mg): 130; Fiber (g): 0;