01 - Preheat the oven to 400°F. Line a baking tray with parchment paper or lightly grease it with oil.
02 - In a small saucepan, combine the pineapple juice, honey, soy sauce, vinegar, olive oil, minced garlic, and grated ginger. Bring to a simmer over medium heat, stirring frequently. Let simmer for 3–4 minutes to allow the flavors to meld.
03 - For a thicker glaze, dissolve the cornstarch in 2 tablespoons of water, stir the slurry into the saucepan, and continue simmering for 1–2 minutes until the mixture thickens to a glossy consistency.
04 - Pat the salmon fillets dry with paper towels and arrange them on the prepared baking tray. Season lightly with salt and pepper.
05 - Brush half of the prepared glaze evenly over the salmon fillets, reserving the remaining glaze for basting during baking.
06 - Bake for 12–15 minutes, until the salmon flakes easily with a fork. Halfway through the cooking time, baste the fillets with the remaining glaze to build a rich, caramelized coating.
07 - Remove the salmon from the oven and garnish with finely diced fresh pineapple and chopped cilantro or green onion. Serve with lime wedges on the side if desired.