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
USS Skipjack (SSN-585) got underway for sea trials off Charleston, before joining for four days of type training in the Jacksonville, Florida, area. She then sailed to her new home port, Norfolk, Virginia, before participating in Atlantic Fleet exercises. Early in February 1967, "Skipjack" got underway for sonar and weapon tests and then participated in Atlantic submarine exercises from March through June. July and August were spent in restricted availability at the Newport News Shipbuilding and Dry Dock Company following which "Skipjack" took part in FIXWEX G-67, an exercise designed to evaluate fixed wing ASW aircraft against a submarine with "Skipjack"'s characteristics. Following