Fish stock (food) Fish stock (food) Fish stock forms the basis of many dishes, particularly fish soups and sauces. In the West, it is usually made with fish bones and fish heads and finely chopped mirepoix. This fish stock should be cooked for 20–25 minutes—cooking any longer spoils the flavour. Concentrated fish stock is called "fish fumet". In Japan, a fish and kelp stock called dashi is made by briefly (3–5 minutes) cooking skipjack tuna (bonito) flakes called "katsuobushi" in nearly boiling water. Other Japanese fish stock is made from fish that have been fried and boiled for several hours, creating a white
Skipjack (boat) oyster harvest has since declined steadily, especially at the end of the 20th century. The size of the fleet has likewise declined. New skipjacks were built as late as 1993, but a change in the law in 1965 allowed the use of motor power two days of the week. As a result, few of the boats are operated under sail in commercial use; instead, a pushboat is used to move the skipjack, and little dredging is done except on the days that power is allowed. At one time, the number of skipjacks produced is estimated at approximately 2,000; today, they