Pour rice wine and miso into a container and mix together, but don't overmix. Add honey and mix until mostly smooth with a few lumps remaining. Place salmon in the container, cover, and let sit in the refrigerator for 2 hours. Flip and let sit for 2 more hours.
Preheat the oven to 255 degrees F (124 degrees C).
Remove salmon from the marinade and shake off excess. Discard the remaining marinade. Place fish on a heavy duty piece of aluminum foil.
Bake in the preheated oven until fish flakes easily with a fork and is a little charred at the edges, 15 to 20 minutes.