To Prep
Clean the fish, make a few cuts and rub a little salt all over. Set aside for 15-30 mins.
Mix marinade and set aside.
Line the bottom half of the green onion and some sliced ginger on a plate. Place fish on top. Insert the rest of the sliced ginger into the cavity of the fish.
Scatter julienned ginger, tomato wedges, mushrooms and cubed pickled mustard evenly over the fish. Line diced tofu and crushed salted plum on both sides of the fish.
Drizzle the marinade all over the fish.
To Cook
Bring water to boil. Lower fish into steamer and steam on high heat for 8-10 mins.
Garnish with green onion and finely sliced ginger. Serve hot.