Lightly butter a medium baking dish with 1 tablespoon butter. Season haddock fillets with salt and pepper. In a small bowl mix together egg yolk and mustard. Brush this mixture liberally over top ...

Cut the haddock fillets in half and place in a pan with the milk, bay leaves and peppercorns. Bring to the boil and then allow to infuse with the heat off and a lid on. Fry the onion on a low heat ...