01 - Preheat oven to 400°F and line a baking tray with parchment paper.
02 - Combine soy sauce, mirin, honey, rice vinegar, ginger, garlic, and sesame oil in a small saucepan and bring to a simmer over medium heat.
03 - Stir in the cornstarch slurry and cook, stirring continuously, until the sauce thickens, about 2 minutes. Remove from heat.
04 - Place salmon fillets on the prepared tray and brush generously with the teriyaki glaze, reserving some for serving.
05 - Bake for 12 to 15 minutes, or until salmon is cooked through and flakes easily with a fork.
06 - Switch oven to broil and broil salmon for 1 to 2 minutes to achieve a caramelized finish, if desired.
07 - Transfer salmon to plates, drizzle with remaining teriyaki glaze, and sprinkle with toasted sesame seeds, spring onions, and chopped coriander if using. Serve immediately.