For sauce:
Add blueberries, garlic, vinegar, brown sugar, lemon juice and coriander to a saucepan over medium heat. Bring mixture to a boil and then reduce the heat and simmer, uncovered, for 12-14 minutes or until sauce has thickened to coat a spoon and reduced to 1 cup.
For the salmon:
Meanwhile, preheat the oven to 425. Line baking sheet with parchment paper and set aside.
In a small bowl, mix brown sugar, coriander and salt and pepper. Set aside.
Arrange salmon on a parchment lined baking sheet, skin side down.
Press brown sugar mixture into each salmon fillet. Measure salmon.
Bake salmon for 4-6 minutes per 1/2-inch thickness.
For grilling: Cover grill grate with foil. Place fish skin side down on foil. Grill for 4 to 6 minutes per 1/2-inch thickness or until fish flakes easily with a fork.
Serve blueberry sauce over salmon and sprinkle with chives.