Heat the oven to 275ยบ.
Lightly oil an oven-safe pan.
Arrange fish skin-side down.
Remove from the oven when just done, after approximately 20 minutes.
(The fish will flake under central pressure.)
Remove the skin by sliding the spatula between the flesh and skin, and transfer the fish to a plate.
Dot the fish with thin slices of butter and dressed with charred-lemon juice.
Or to make it truly special, try using this recipe for Seaweed Butter!