Steam the fish first and add ginger-scallion soy sauce at the end. For a whole fish, its thickness matters more than its length: flesh beside the backbone can lag behind a thin tail. Have the rice and side dishes ready so the cooked fish goes straight to the table.
A whole fish that fits your equipment
Use one cleaned striped bass or sea bass around 680 g, 3 tablespoons finely cut ginger strips, 2 scallions cut into strips with whites and greens separate, and optional chopped cilantro. For a smaller home finishing sauce, prepare 2 tablespoons light soy, 3 tablespoons water, 1/2 teaspoon sugar, a pinch of white pepper and 2 tablespoons neutral oil.
This is a reduced-sauce adaptation of The Woks of Life’s whole-fish method, not its full oil-and-soy formulation. Use an oval rimmed heatproof plate and a stable purpose-made steaming rack that fit under the lid without touching it.

Keep fish cold and the steaming setup stable
Ask the fishmonger to remove scales, gills and entrails. Check the cleaned cavity and skin for remnants, drain excess moisture and keep fish refrigerated until cooking. Wash hands and sanitize the preparation area after handling raw fish. If bought frozen, thaw in the refrigerator, not on the counter.
Bring water below the plate to a boil. Load fish without piling it or bending it against the lid, cover, and begin checking around 9 minutes for this size. Continue until done; a thick-bodied fish can take longer than a flat fish of equal weight.

Check the thick flesh before finishing
Probe the thickest flesh beside, but not touching, the backbone. FDA seafood guidance recommends 145 F (63 C); cooked fish should be opaque and separate easily. Do not use the bone’s appearance or sauce temperature as proof of meat doneness. If below the target, return to steam before adding garnish.
Using mitts or a plate lifter, transfer the dish and carefully drain accumulated cooking liquid. Gently sizzle half the ginger and scallion whites in the oil in a saucepan; add the premixed soy, water, sugar and pepper and bring to a simmer. Put remaining ginger and scallion greens over fish and spoon on the hot sauce. This keeps the sauce in a controlled saucepan rather than requiring a freehand pour of smoking oil.

Serve around the bones
Lift flesh from the top side, remove the exposed central backbone carefully, then offer the lower fillet. Small pin bones can remain, so inspect every portion, especially for children; removing the main backbone does not make a whole fish boneless. Offer extra sauce separately rather than covering the flesh.
For fish selection read choosing fish for steaming; for the simpler piece-based method see steamed fish fillets. Fish and soy sauce are allergen checks.
Frequently Asked Questions
Can a fillet use the same nine-minute checkpoint?
Not automatically. Thickness and plate arrangement change timing. Thin fillets usually need earlier checks, while whole fish require checking beside the backbone.
Why does the fish taste watery?
Drain the plate liquid before finishing and thaw frozen fish fully. More soy sauce cannot fix excess thawing water without making the dish saltier.
AI-generated illustrations, if used, are not photographs of a tested batch.