I don't mean the dry, flavorless hardtack crackers that can keep for months.
From the npr.org
They infested the hardtack the soldiers carried, their only portable food.
From the sacbee.com
Canned corn beef and hardtack were the staples that had been brought down from New York.
From the ocregister.com
The sweet alcoholic potion revived their spirits, and the chewy hardtack gave sustenance.
From the theatlantic.com
Students dined on hardtack, biscuits that were eaten by the travelers.
From the sltrib.com
Others had hardtack biscuits, known to crack molars if carelessly chewed.
From the newsobserver.com
A cracker is a type of biscuit that developed from military hardtack and nautical ship biscuits.
From the en.wikipedia.org
Yes, we do still make hardtack candy and we do it together.
From the post-gazette.com
This was supplemented by hard chocolate, 14 ounces of hard bread or hardtack biscuits, coffee, and sugar.
From the en.wikipedia.org
More examples
Very hard unsalted biscuit or bread; a former ship's staple
A mountain mahogany
Hardtack (or hard tack) is a simple type of cracker or biscuit, made from flour, water, and sometimes salt. Inexpensive and long-lasting, it was and is used for sustenance in the absence of perishable foods, commonly during long sea voyages and military campaigns. ...
Hardtack is a set of rules for American Civil War miniature wargaming by Lou Zocchi. It was published as a 30-page pamphlet by Guidon Games in 1971, with an introduction by Gary Gygax and artwork by Don Lowry.
A sailors name for sea biscuits.
Extremely hard crackers made of only flour, water, and salt. Hardtack would keep for years if dry, but dry was not on a ship, so they often grew maggots or other worms. Also called: hardbread, ship's biscuit, tooth dullers, molar breakers, sheet iron crackers, and worm castles.
A hard, coarse, saltless biscuit that was formerly used aboard ships (sea biscuits) and for army rations; also known as "pilot biscuit" or "pilot bread". See PITA, SANDWICH, PANCAKE, SINKER, BULLY SOUP, IRON RATIONS, BEANS, CHOW, THREE SQUARES, RATIONS, SLUSH FUND. ...
A biscuit made of flour, salt, and water that was very hard
A large, hard biscuit made with unsalted, unleavened,flour and water dough. It is baked and dried to give it a longer shelf life and has been used as a staple by sailors at least since the 1800's. It is also known as ship biscuit and sea bread.