Make the Teriyaki Sauce:
In a mixing bowl, whisk together soy sauce, honey, rice vinegar, grated ginger, minced garlic, and sesame oil. For a thicker sauce, mix in cornstarch until well combined.
Marinate the Salmon:
Place the salmon fillets in a shallow dish and pour the teriyaki sauce over them. Let them marinate for at least 10 minutes (or up to 1 hour for more flavor).
Preheat the Air Fryer:
Preheat your air fryer to 400°F (200°C) for about 5 minutes.
Cook the Salmon:
Lightly oil the air fryer basket. Place the marinated salmon fillets in the basket, skin-side down. Brush with additional teriyaki sauce if desired.
Air fry for 8-10 minutes, or until the salmon is cooked through and flakes easily with a fork. Cooking time may vary based on the thickness of the fillets.
Garnish and Serve:
Once done, remove the salmon from the air fryer and sprinkle with sesame seeds and sliced green onions. Serve hot over rice or alongside steamed vegetables.