2 Murray cod (approx. 800g each), gutted and scaled
180g cold unsalted butter, chopped
2 tbsp chopped dill
For the Poaching Stock
2 tbsp coriander seeds
2 tbsp black peppercorns
2 tbsp fennel seeds
250ml (1 cup) fish sauce
1 long red chilli, halved lengthways
2 brown onions, quartered
1 lime or lemon, sliced
4 litres water
2 tbsp sea salt
Procedure
Prepare the Poaching Stock
In a fish kettle, combine all the poaching stock ingredients with 4 litres of water and 2 tbsp sea salt.
Bring to a simmer over high heat, then reduce to just below a simmer.
Poach the Fish
Place the fish into the poaching liquid, ensuring the stock covers the fish. The liquid should not boil; small bubbles should gently rise from the base. The temperature of the stock should be 85°C-90°C if using a thermometer.
Poach the fish gently until just cooked through, about 15 minutes.
Prepare the Dill Butter Sauce
Remove 250ml of poaching stock and strain into a small saucepan. Place over high heat and reduce until about 1 tbsp of liquid remains.
Reduce heat and begin to add pieces of butter, whisking to combine until all the butter is incorporated and the sauce is emulsified.
Stir through the dill and remove from heat.
SERVE
When the fish is just cooked through, transfer to a serving platter.
Spoon the dill butter sauce over the fish and serve immediately.