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Pruno

Pruno 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 Pruno rather than just read about it. In short: Pruno, prison hooch and prison wine are terms used in the United States to describe an improvised alcoholic beverage. It is variously made from apples, oranges, fruit cocktail, fruit juices, hard candy, sugar, high fructose syrup, and possibly other ingredients, including crumbled bread.

Pruno — main illustration
Pruno — illustration

Key takeaways

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

Reference excerpt

Pruno, prison hooch and prison wine are terms used in the United States to describe an improvised alcoholic beverage. It is variously made from apples, oranges, fruit cocktail, fruit juices, hard candy, sugar, high fructose syrup, and possibly other ingredients, including crumbled bread. Bread is incorrectly thought to contain yeast for the pruno to ferment. Pruno originated in US prisons, where it can be produced with the limited selection of equipment and ingredients available to inmates. It can be made using only a plastic bag, hot running water, and a towel or sock to conceal the pulp during fermentation. The end result has been described as a "bile-flavored wine cooler". Depending on the time spent fermenting (always balanced against the risk of discovery by officers), the sugar content, and the quality of the ingredients and preparation, pruno's alcohol content by volume can range from as low as 2% (equivalent to a very weak beer) to as high as 14% (equivalent to a strong wine).

Description Typically, the fermenting mass of fruit—called the motor or kicker in US prison parlance—is retained from batch to batch to make the fermentation start faster. The more sugar is added, the greater the potential for a higher alcohol content—to a point. Beyond this point, the waste products of fermentation (mainly alcohol) cause the motor to die or go dormant as the yeasts' environment becomes too poisoned for them to continue fermenting. This also causes the taste of the end product to suffer. Ascorbic acid powder is sometimes used to stop the fermentation at a certain point, which, combined with the tartness of the added acid, somewhat enhances the taste by reducing the cloyingly sweet flavor associated with pruno. In 2004 and 2005 botulism outbreaks were reported among inmates in two California prisons; the Centers for Disease Control and Prevention suspects that potatoes, a known source of the bacterium that causes botulism, used in making pruno were to blame in both cases. In 2012, similar botulism outbreaks caused by potato-based pruno were reported among inmates at prisons in Arizona and Utah. Inmates are not permitted to have alcoholic beverages, and correctional officers confiscate pruno. In an effort to eradicate pruno, some wardens have gone as far as banning all fresh fruit, fruit juices, and fruit-based food products from prison cafeterias. But even this is not always enough; there are pruno varieties made almost entirely from sauerkraut and orange juice. Food hoarding in the inmate cells in both prisons and jails allows the inmates to acquire ingredients and produce pruno. During jail and prison inmate cell searches, correctional officers remove excessive or unauthorized food items to halt the production of pruno. Pruno is hidden under bunks, inside toilets, inside walls, trash cans, in the shower area and anywhere inmates feel is safe to brew their pruno away from the prying eyes of correctional officers and jailers. Jarvis Jay Masters, a former death row inmate at San Quentin, offers an oft-referenced recipe for pruno in his poem "Recipe for Prison Pruno", which won a PEN award in 1992. Another recipe for pruno can be found in Michael Finkel's Esquire article on Oregon death row inmate Christian Longo. In 2004 at the American Homebrewers Association's National Homebrew Conference in Las Vegas, a pruno competition and judging was held.

See also

References

External links "Jailhouse Hooch: How to Get Liquored Up While Locked Down" from Modern Drunkard Magazine Blacktable.com Archived 2020-04-13 at the Wayback Machine—a complete pruno recipe, including detailed instructions and frequent disclaimers. "Steve Don't Eat It, Vol. 8: Prison Wine"—extensive, humorous account of pruno preparation and tasting, with photographs, from The Sneeze. "How to Make Pruno: 8 steps"—on wikiHow "Jailhouse Pruno -- Homemade Booze: It'll Kill You"—story about pruno-making methods, pruno stashing, and the cost of pruno in Sacramento, California's New Folsom prison circa 1995.

Illustrations

Pruno: A one-US-gallon (3.8 L) jug of contraband prison wine made from oranges, confiscated from an inmate
A one-US-gallon (3.8 L) jug of contraband prison wine made from oranges, confiscated from an inmate

Worked examples

Example 1 — a first encounter with Pruno

Start with the simplest possible case. Write down what Pruno 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 Pruno 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 Pruno 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 Pruno

In research
Pruno 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 Pruno 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
Pruno is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fermented drinks, Prison-related crime, Prison drinks, so understanding it makes those chapters shorter.
In everyday life
Look for Pruno 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 Pruno in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Pruno 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 Pruno out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Pruno in simple terms?

Pruno, prison hooch and prison wine are terms used in the United States to describe an improvised alcoholic beverage. It is variously made from apples, oranges, fruit cocktail, fruit juices, hard candy, sugar, high fructose syrup, and possibly other ingredients, including crumbled bread.

Why does Pruno 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 Pruno?

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 Pruno.

Tags

  • Fermented drinks
  • Prison-related crime
  • Prison drinks

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