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["If your meat is on the thick side, spray a sheet of plastic wrap lightly with cooking spray (will prevent beef from tearing), fold it over a slice of beef and pound out thinner with a meat mallet.", "Stack 6 beans cross-wise at one end and roll into a tube, fastening with kitchen twine or toothpicks.", "Marinate the bundles in the soy sauce, sake, mirin, and sugar for at least 30"".", "Reserving the marinade, remove the bundles and pat dry.", "In batches so they're not over-crowded, sear the bundles in sesame oil and set aside.", "Once all of the bundles have been seared, return them all to the pan, along with the reserved marinade and any drippings.", "Allow to simmer until tender and cooked through (will depend on how thin you pounded the beef, how long it marinated, etc.)", "Stir the cornstarch into a little water to create a slurry, then add it to the sauce and cook until thickened.", "To serve, spoon a little sauce over each bundle, and top with chopped scallions and toasted sesame seeds."]
