Sesame Flank Steaks with Grilled Green Onion

 

2 1½-pound flank steaks, about ½ inch thick, trimmed of excess fat

½ cup soy sauce

8 T. sesame oil, divided

6 T. rice wine vinegar

Vegetable oil for oiling grill rack

2 bunches green onions

Sea salt or kosher salt

 

3 T. sesame seeds, toasted Place steaks in a shallow nonreactive dish, which will hold them comfortably in a single layer. In a small bowl, whisk together soy sauce, 6 T. of the sesame oil, and vinegar. Pour marinade over the meat and marinate 6 hours or overnight, turning several times. When ready to cook meat, oil a grill rack and arrange 4 to 5 inches from heat source. Prepare a grill for a hot fire (high temperature). Cut off root ends of green onions, then trim stems, leaving 4 inches of the green. Place the onions in a shallow dish or pan and brush all over with remaining 2 T. of sesame oil. Set aside. When grill is hot, remove steaks from marinade. Pat dry lightly with paper towels, then grill 6 to 7 minutes per side for medium-rare. (Internal temperature should be 145 degrees F.) Remove to a platter and cover loosely with aluminum foil to keep warm. Grill green onions, turning occasionally, until slightly charred, 3 to 5 minutes. Remove to a side dish. To serve, slice the meat diagonally, across the grain, into ¼-inch-thick slices. Arrange slices on a serving platter. Garnish platter with grilled onions. Season meat and onions with salt, then sprinkle with sesame seeds.