Boiled Halibut

Put about two pounds of halibut into a saucepan and cover it with fresh water,
add one sliced onion, half a sliced carrot and a garnished bouquet, season with one
handful of salt and pour over two tablespoonfuls of vinegar. Place the lid on and
cook gently for about five minutes after coming to the boiling point, then remove the
fish, drain well, dress it on a hot dish and serve with anchovy butter spread all over.