Hibiscus lends a light tart and slightly floral flavor similar to lemon while also producing a beautiful color. Grassy, fresh, and lemony gremolata brightens the rich fish.

Grind the hibiscus in a coffee or spice grinder until finely powdered.
Preheat the oven to 200ºF and line a rimmed baking sheet with foil. Rub the foil with a little bit of avocado oil to prevent sticking and then lay the salmon on top. Season to taste with salt and pepper. Rub the salmon with coconut aminos and then sprinkle with the hibiscus powder.
Bake at 200ºF for 20 minutes, or until the fish is just beginning to flake, or registers 120ºF inside. It will have a more raw appearance but be cooked at this point.
While the fish bakes, prepare the gremolata. In a small bowl, stir together the gremolata ingredients, adding more oil as desired to thin the consistency. Drizzle over cooked fish to serve.