Fish and meat in European cooking are traditionally salted to help preserve them – for example, smoked salmon or duck confit. In countries such as China and Japan, salting is also used to change the texture of food and, equally importantly, to remove fishy or meaty odours, partly by extracting blood and bitter juices.

Dry salting, such as here, is used for oily fish such as mackerel, herring and salmon. The longer any ingredient is salted, the more liquid is extracted and the saltier the ingredient will taste. The art is to allow just enough salt to develop the umami tastes, but not so much that all the tastes are submerged beneath the salt. The tarragon butter adds a tempting rich texture and depth of flavour.

Recipe extracted from Sight, Smell, Touch, Taste, Sound: A New Way to Cook, Pavilion Books.