Microwave Scallion Ginger Black Cod

Ingredients

• 450 g Black cod, skin-on
• 25 g Scallion, white part
• 10 g Scallion, green part
• 13 g Ginger
• 3 g Ginger
• 5 ml Shaoxing wine
• 25 ml Soy sauce
• 2 ml Sesame oil
• 50 ml Peanut oil

Method

Black cod's high fat content — roughly 15% — means it cooks through gently without drying out. The microwave is ideally suited to this: microwave-cooking heats water molecules uniformly, steaming the fish from within rather than searing the exterior. You're after translucent flesh that just loses its gloss, not rubbery flesh.

Lay the skin-on fillets skin-down in a microwave-safe dish or on a plate lined with parchment. Julienne the 25 g scallion whites and 13 g ginger into matchsticks — roughly 3 cm long — and scatter half the mixture directly onto each fillet. These aromatics will infuse the flesh as it cooks. Pour 2.5 ml Shaoxing wine into each pocket around the fish; the alcohol will evaporate, leaving its savoury depth. Cover loosely with cling film or a microwave lid to trap steam without building pressure. Microwave at 600 watts for 3–4 minutes. At 3 minutes, the flesh should feel barely set at the thickest point — it will continue cooking off-heat from residual warmth. You're looking for the moment when the skin pulls back slightly and the meat whites but still looks faintly translucent at the centre. Overcooked black cod turns cottony fast. Once done, discard the cooked aromatics — they've given their flavour and become stringy.

Make your sauce pool: whisk 25 ml soy sauce with 2 ml sesame oil. This isn't an emulsion; the oil will bead slightly on the soy, which is correct. Drizzle this over both fillets.

Now the hot-oil-finishing: heat 50 ml peanut oil in a small saucepan until it reaches 190°C — use a thermometer, don't guess. At this temperature the oil shimmers and a ginger matchstick dropped in will sizzle immediately. Meanwhile, julienne the remaining 10 g scallion greens and 3 g ginger and scatter them over the fish. Pour the hot oil directly over the greens and ginger — the sudden heat wilts the scallion, sharpens the ginger's bite, and creates the aromatic fragrance that defines this dish. Serve immediately on warm plates. The fish will continue to set as it sits, and the hot oil will cool within seconds, so timing here is about delivering maximum impact at the table, not about further cooking.