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Hardtack

Hardtack is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Hardtack rather than just read about it. In short: 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.

Hardtack — main illustration
Hardtack — illustration

Key takeaways

  • Hardtack belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Hardtack to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Hardtack from memory before moving on to harder problems.

Reference excerpt

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 for many militaries and navies from the 17th to the early 20th centuries.

Etymology The name is derived from "tack", the British sailor slang for food. The earliest use of the term recorded by the Oxford English Dictionary is from 1830. It is known by other names including brewis (possibly a cognate with "brose"), cabin bread, pilot bread, sea biscuit, soda crackers, sea bread (as rations for sailors), ship's biscuit, and pejoratively as dog biscuits, molar breakers, sheet iron, tooth dullers, weevil hardtack, Panzerplatten ("armor plates"; Germany) and worm castles. Australian and New Zealand military personnel knew them with some sarcasm as ANZAC wafers (not to be confused with Anzac biscuit).

History The introduction of the baking of processed cereals, including the creation of flour, provided a more reliable source of food. Egyptian sailors carried a flat brittle loaf of millet bread called dhourra cake. A cracker called bucellatum is known from Ancient Rome. King Richard I of England left for the Third Crusade (1189–1192) with "biskit of muslin", which was a mixed grain compound of barley, bean flour, and rye. The more refined captain's biscuit was made with finer flour. Some 5th century BCE physicians, such as Hippocrates, associated most medical problems with digestion. For sustenance and health, eating a biscuit daily was considered good for one's constitution. Because hardtack biscuits were baked hard, they would stay intact for years if kept dry. For long voyages, hardtack was baked four times, rather than the more common two, and prepared six months before sailing. Because it is dry and hard, hardtack, when properly stored and transported, will survive rough handling and temperature extremes. Dry hardtack is dense and virtually inedible; troops issued it usually made it edible by dampening or crushing the biscuits. When James VI and I set sail for Norway in October 1589, his provisions included 15,000 "bisquit baiks". In 1665, Samuel Pepys first regularized naval victualling in the Royal Navy with varied and nutritious rations, to include "one pound daily of good, clean, sweet, sound, well-baked and well-conditioned wheaten biscuit". By at least 1731, it was officially codified in Naval regulation that each sailor was rationed one pound (450 g) of biscuit per day. Hardtack was also utilized by the Pilgrims during their 1620 voyage, primarily due to its easy storage and long lifespan. However, the travelers struggled with insect infestation, as well as having to dip the hardtack into water for it to be edible. Hardtack, crumbled or pounded fine and used as a thickener, was a key ingredient in New England seafood chowders from the late 1700s. In 1801, Josiah Bent began a baking operation in Milton, Massachusetts, selling "water crackers" made of flour and water that would be resistant to deterioration during long sea voyages from the port of Boston. These were also used extensively as a source of food by the gold prospectors who migrated to the gold mines of California in 1849. Since the journey took months, hardtack was stored in the wagon trains. Bent's company later sold the original hardtack crackers used by troops during the American Civil War. The G. H. Bent Company operated in Milton and sold these items to Civil War re-enactors and others until 2018.

By 1818, the United States Navy had outlined that each sailor was to be given 14 ounces (400 g) of bread per day as part of their daily ration while serving onboard in the form of hardtack. The procurement of these stores was the responsibility of the ship's Purser, and was not strictly outlined by the Board of Navy Commissioners. During the American Civil War (1861–1865), three-by-three-inch (7.6 by 7.6 cm) hardtack was shipped from Union and Confederate storehouses. Civil War soldiers generally found their rations to be unappealing; hardtack's ability to host worms earned it the "worm castles" nickname, and soldiers joked about the poor quality of the hardtack in the satirical song "Hard Tack Come Again No More". The song was sung to the tune of the Stephen Foster song "Hard Times Come Again No More", and featured lyrics describing the hardtack rations as being 'old and very wormy' and causing many 'stomachs sore'. John Billings, a soldier in the 10th Massachusetts Battery, outlines many details on how hardtack was utilized during the war in his book Hard Tack and Coffee.

With insect infestation common in improperly stored provisions, soldiers would break up the hardtack and drop it into their morning coffee. This would not only soften the hardtack but the insects, mostly weevil larvae, would float to the top, and the soldiers could skim them off and eat the biscuits. The grubs "left no distinctive flavor behind." Some men turned hardtack into a mush by breaking it up with blows from their rifle butts, then adding water. If the men had a frying pan, they could cook the mush into a lumpy pancake; otherwise they dropped the mush directly on the coals of their campfire. They also mixed hardtack with brown sugar, hot water, and sometimes whiskey to create what they called a pudding, to serve as dessert.

… excerpt ends here. Continue reading the full article.

Illustrations

Hardtack illustration
Hardtack: 1832 advertisement for hardtack in a Boston directory
1832 advertisement for hardtack in a Boston directory
Hardtack: Reproduction American Civil War-era army (left) and navy (right) hardtack. Note the shape, as army hardtack was shipped in boxes and shipboard navy provisions were shipped in barrels.
Reproduction American Civil War-era army (left) and navy (right) hardtack. Note the shape, as army hardtack was shipped in boxes and shipboard navy provisions were shipped in barrels.
Hardtack: Hexagonal hardtack produced by the Royal Navy for the British Arctic Expedition
Hexagonal hardtack produced by the Royal Navy for the British Arctic Expedition
Hardtack: Japanese hardtack "Kanpan" produced for use by the Japan Ground Self-Defense Force.
Japanese hardtack "Kanpan" produced for use by the Japan Ground Self-Defense Force.

Worked examples

Example 1 — a first encounter with Hardtack

Start with the simplest possible case. Write down what Hardtack claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Hardtack before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Hardtack ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Hardtack

In research
Hardtack appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Hardtack in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Hardtack is common in secondary-school and first-year university syllabi. It links to neighbouring topics Biscuits, Crackers (food), Cuisine of Alaska, so understanding it makes those chapters shorter.
In everyday life
Look for Hardtack outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Hardtack in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Hardtack means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Hardtack out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hardtack in simple terms?

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.

Why does Hardtack matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Hardtack?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Hardtack.

Tags

  • Biscuits
  • Crackers (food)
  • Cuisine of Alaska
  • Cuisine of the Southwestern United States
  • Fur trade
  • Maritime culture
  • Military food

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