01 - Preheat the oven to 400°F and line a baking sheet with parchment paper or lightly grease it.
02 - Pat salmon fillets dry. Rub each with olive oil and season with salt and black pepper. Arrange skin-side down on the prepared baking sheet.
03 - In a small saucepan, combine soy sauce, honey, brown sugar, rice vinegar, mirin if using, sesame oil, garlic, and ginger. Bring to a simmer over medium heat.
04 - Whisk together cornstarch and cold water, then stir the slurry into the saucepan. Cook for 2 to 3 minutes until the sauce thickens, stirring continuously. Remove from heat.
05 - Brush salmon fillets generously with the teriyaki glaze, reserving some for serving.
06 - Bake the salmon for 12 to 15 minutes until just cooked through and flaky. For a caramelized finish, broil for an additional 1 to 2 minutes.
07 - Drizzle with reserved glaze and garnish with toasted sesame seeds, sliced green onions, and lemon wedges. Serve immediately.