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Hardtack (or hard tack) is a type of dense cracker made from flour and small amounts of water, with salt being sometimes added. Hardtack is very inexpensive and long-lasting if kept dry, allowing it to be used for sustenance in the absence of perishable foods. It is commonly used during long sea voyages, land migrations, and military campaigns. Along with salt pork and corned beef, hardtack was a standard ration

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