To make the marinade, combine mirin, sake, and soy sauce in a small bowl.
To make the Miso Sauce, blend the miso, rice wine vinegar, honey, and soy sauce in a small blender until smooth.
Preheat your 5- or 6-quart air fryer to 325°F for 3 minutes.
Cut the salmon into 3/4-inch pieces and thread them onto six metal or bamboo skewers.
Brush the salmon all over with the marinade.
Carefully pull out the air-fryer pan and basket, line the basket with parchment paper, and place the green onions in the basket.
Slide the pan and basket back into the appliance.
Keep the temperature set at 325°F and set the timer for 5 minutes.
Leave to cook.
Transfer the green onions to a platter and cover to keep warm.
Place half of the skewers in the basket.
Keep the temperature set at 325°F and set the timer for 5 minutes or cook to your liking.
Transfer the cooked skewers to the platter and cover to keep warm.
Repeat cooking with the remaining skewers.
Serve the salmon with green onions, drizzled with Miso Sauce, and scattered with toasted sesame seeds.
Notes / Tips / Wine Advice:
Serve with cooked microwave brown rice or quinoa and lime cheeks.
The marinade and miso sauce also work well with large shrimp. If using shrimp, cook them for 5 minutes