How to Make It
Place salmon fillet in a shallow dish. Drizzle 2 tablespoons olive oil and ½ teaspoon of salt evenly over salmon fillet; set aside.
Whisk together the vinegar, maple syrup, orange zest, orange juice, ginger, garlic, and remaining ½ teaspoon salt in a small bowl. Pour half of the vinegar mixture over the salmon and let stand for 15 minutes. Place the remaining half of the vinegar mixture in a small saucepan over low heat; simmer until thickened slightly, about 5 minutes.
Coat a rimmed baking sheet with remaining 1 tablespoon olive oil; transfer fish to pan. Broil 8 minutes or until fish flakes easily when tested with a fork. Drizzle reduced sauce over salmon; serve immediately.