HARDTACK-Teak was an exoatmospheric high altitude nuclear weapon test performed during Operation Hardtack I. However, unlike hardtack, saltines include yeast as one of their ingredients. Unlike the traditional hardtack recipe, Sailor Boy Pilot Bread contains leavening and vegetable shortening. Sailors and passengers were issued a daily food ration, largely consisting of hardtack and beer. Hardtack 7 was a raid on Sark. Another common dish was Skillygalee, hardtack soaked in water and fried in fat. The round hardtack crackers are available in large- and small-diameter sizes. This nuclear test codenamed Wahoo was the first underwater test in the Operation Hardtack series. Canada is one Canadian maker of traditional hardtack. The next raids were Operations Hardtack 28 and Hardtack 7 in December 1943. June 9 saw the second underwater nuclear test of the Hardtack I series. The second underwater explosion of the Operation Hardtack series was code-named Umbrella. They were the last of the Hardtack tests conducted at the Enewetak Atoll. In 1958, Johnston Atoll was the location of the two "Hardtack I" nuclear tests firings. Hardtack is inexpensive and long-lasting.