01 -
In a mixing bowl, combine soy sauce, teriyaki sauce, brown sugar, rice vinegar, minced garlic, and minced ginger until sugar is dissolved.
02 -
Add the beef cubes to the marinade, ensuring they are evenly coated. Cover and refrigerate for a minimum of 15 minutes.
03 -
Place a large skillet over medium-high heat and pour in the vegetable oil. Allow the oil to heat until it appears shimmering.
04 -
Remove beef cubes from marinade, reserving liquid. Arrange beef in a single layer in the hot skillet. Sear for 2–3 minutes per side until deeply browned and cooked to your preferred doneness.
05 -
Pour reserved marinade into the skillet and simmer for 2–3 minutes until the sauce reduces and coats the steak bites.
06 -
Remove skillet from heat. Garnish steak bites with green onions and sesame seeds before serving.