Melt the butter in a large saucepan and gently fry the onion, celery and bacon with the bay leaf and thyme sprig for five minutes, or until softened and lightly coloured.
Cube the potato & add to the pan with the vegetables.
Add the milk and stock and bring to a gentle simmer. Cook for 15 minutes, or until the potatoes are tender.
Place the fish into the chowder ensuring that the fish is below the surface, and poach until cooked, this should only take about 5 minutes, then remove the fish.
Add the leek, cream and wine to the soup. Return to a gentle simmer and cook for three minutes.
Flake the fish with your fingers and check for bones. Add the fish back into the chowder, heat through and serve with fresh bread and chopped parsley.
Recipe by Lisa Fearn, originally featured on Prynhawn Da.