Yakatori

Combine soy sauce, white sugar, lemon juice, minced garlic, and ground ginger in a small bowl, stirring until the sugar dissolves completely.

Cut the sirloin steak into 1-inch cubes, removing any excess fat as needed.

Thread the beef cubes onto metal skewers, alternating with any vegetables desired, leaving small gaps between pieces for even cooking.

Reserve 1/4 cup of the marinade for basting, then place the beef skewers in a shallow dish and pour the remaining marinade over them, turning to coat all sides.

Heat vegetable oil in a large skillet or grill pan over medium-high heat until shimmering.

Place the marinated skewers on the hot skillet or grill, cooking for 3–4 minutes per side until the beef develops a caramelized crust.

Baste the skewers with the reserved marinade halfway through cooking, turning as needed for even browning.

Transfer the yakitori to a serving platter and sprinkle with sesame seeds and sliced green onions while still warm.