How to Make It
Preheat oven to 300°F. Season fish with salt and, if desired, pepper, and let stand 20 minutes. Toss fish with oil in a bowl to evenly coat, and place in a baking dish. Drizzle remaining oil from bowl over fish. Bake at 300°F; check doneness after 15 minutes by pressing flesh gently with your thumb. If the fish flakes apart, it is ready. If not, cook an additional 3 to 5 minutes and check again.
Rinse shallot under cold running water; pat dry. Once the fish is cooked, mix the warm oil from the baking dish with the shallot, herbs, and juice. Serve with fish.