Method

• Sweat the onion in a little oil with some seasoning.
• Put the fish into a wide pan, cover with the milk and add a fresh bay leaf. Season with salt and freshly ground pepper.
• Cover and simmer gently until the fish is just cooked, 5 minutes depending on the thickness of the fish.
• Remove the fish to a plate with a slotted spoon. Discard the bay leaf.
• Preheat the oven to 180ºC.
• Bring the cooking liquid to a boil and thicken it by whisking in the cornflour.
• Add the chopped herbs, onions and chunks of fish.
• Spoon into 6–8 dishes and top with fluffy potatoes

To finish cooking, cook in the oven for 30 minutes.