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1
Heat vegetable oil in a small saucepan over medium-high heat until shimmering (a scingle scallion dropped into it should sizzle immediately. Meanwhile, combine scallions and ginger in a medium bowl and season well with salt. When oil is hot, pour over scallions and ginger. It should sizzle for a few seconds. Allow to cool.
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2
Lay steak on a cutting board with grain running parallel to the edge of the counter. Trim left and right edges to form a clean rectangle and reserve scraps for another use. Hold steak flat with your non-knife hand and, with a sharp boning knife, carefully butterfly the steak, leaving the back edge attached by 1/2- to 1/4-inch of meat. Open up steak and flatten the seam gently with your hand to form a large perfect rectangle.
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3
Season steak on exposed side with salt and pepper. Spread scallion-ginger mixture over steak, leaving a 1-inch border at the top and the bottom.
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4
Carefully roll the steak away from you (the grain should run width-wise), tightening as you go until it is rolled into a cylinder. Let it rest with its seam-side down.
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5
Tie the beef tightly with twine, spacing the ties evenly every 1 1/2 inches. Insert a skewer through each piece of twine. Using a sharp knife, carefully cut between the ties to make the pinwheels. Season with salt and pepper.
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6
When all the charcoal is lit and covered with gray ash, pour out and spread the coals evenly over half of coal grate. Alternatively, set half the burners of a gas grill to high heat. Set cooking grate in place, cover grill and allow to preheat for 5 minutes.
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7
and
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8
the grilling grate. Place the pinwheels on the hot side of the grill and cook without moving until well charred on first side, about 3 minutes. Flip steaks and char second side, about 3 minutes longer. Transfer to cooler side of grill, brush with 1 to 2 tablespoons teriyaki sauce, cover, and cook until an instant read thermometer inserted into the center registers 120u00b0F for medium-rare or 130u00b0F for medium, flipping once half way through cooking and brushing with more sauce. Transfer to a platter, let rest for five minutes, brush with more sauce, sprinkle with scallions, and serve.
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9
: Adjust oven rack to center position and preheat oven to 400u00b0F. Heat 2 teaspoons vegetable oil in a large skillet over high heat until lightly smoking. Add steaks and cook, turning occasionally, until well browned on both sides, about 4 minutes total. Transfer to a wire rack set in a foil-lined rimmed baking sheet. Brush with sauce and transfer to oven. Cook until an instant read thermometer inserted into the center registers 120u00b0F for medium-rare or 130u00b0F for medium, flipping once half way through cooking and brushing with more sauce, about 2 to 5 minutes total. Transfer to a platter, let rest for five minutes, brush with more sauce, sprinkle with scallions, and serve.
