First, steam the fish

Rub the fish with salt. Sprinkle pepper, if desired.

Place the fish and ginger on a plate and place inside a steamer.

Steam for 15-20 minutes or until done (fish is opaque white and starts to flake easily).

Remove the fish from the steamer and transfer to a serving platter.

Next, make the sauce and assemble the dish:

Remove the plate from the steamer and pour the remaining liquid into a small bowl.

Add the oyster sauce and sesame oil, and whisk lightly.

Pour the mixture over the fish and top with chopped coriander and leeks (optional garnish).