4firm, mild, white fish fillets(such as grouper, sea bass, flounder, cod, or halibut, each about 6 oz)
1small yellow onion(diced)
1walnut-sized piece of fresh ginger(peeled and thinly sliced)
1small bunch of fresh cilantro(chopped)
1tbspchopped garlic
1/2tspcayenne pepper flakes
2tspgrated lemon or lime zest
1tspfreshly ground pepper
1/4cuplemon or lime juice
1/4cupolive oil
Optional: 1 lemon or lime(quartered)
Sea salt or kosher salt(to taste)
Instructions
Place the fish fillets in a shallow baking pan lined with baking parchment. Season lightly with salt.
Combine the onion, ginger, cilantro, garlic, chili, lime zest, pepper, lemon or lime juice and olive oil in a food processor fitted with the knife blade. Pulse until a paste forms.
Rub the paste evenly over both sides of each fish fillet. Cover and store in the refrigerator 2-4 hours.
About 15 minutes before serving, heat the oven grill to its maximum temperature. Cook the fish under the grill without turning it over, for 10 minutes. A certain amount of sauce will form in the baking pan. Spoon it over the fish before serving.
Transfer to warmed individual plates. Serve immediately with lemon or lime wedges, if desired.