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Modern Era

Coffee and the World Wars

Quick Answer

Both World Wars reshaped coffee through rationing, military demand, and instant-coffee innovation. In WWI, governments imposed rationing and the U.S. urged conservation. In WWII, the U.S. military became the world's largest coffee buyer, civilians were rationed to one pound every five weeks, and instant coffee production expanded massively to supply troops.

Key Takeaways

  • During World War II, the U.S. military was the world's largest single coffee buyer, supplying millions of soldiers with coffee as both a stimulant and a morale booster.
  • The U.S. government mandated that all coffee supplied to the military be instant, driving rapid innovation in instant coffee technology and establishing instant coffee as a consumer product after the war.
  • During WWII coffee rationing, American civilians were limited to one pound of coffee every five weeks, leading to widespread use of chicory, grain substitutes, and coffee ground reuse.
  • Nescafe, launched by Nestle in 1938, became a global brand during World War II as it was included in millions of military ration kits distributed to American GIs.
  • The International Coffee Agreement of 1962, partly motivated by Cold War fears of communist influence in Latin American coffee nations, governed global coffee trade for nearly 30 years.
  • Coffee was considered so important to troop morale during WWII that General George S. Patton called it 'as important as ammunition.'
Summary

Both World Wars reshaped coffee through rationing, military demand, and instant-coffee innovation. In WWI, governments imposed rationing and the U.S. urged conservation. In WWII, the U.S. military became the world's largest coffee buyer, civilians were rationed to one pound every five weeks, and instant coffee production expanded massively to supply troops.

Sources: Pendergrast, M. Uncommon Grounds: The History of Coffee and How It Transformed Our World. Basic Books. 2019.; Topik, S. 'Coffee.' In: The World That Trade Created. Routledge. 2012.; Lyons, K.E. The Complete World of Coffee. Lyons Den Publishing. 2024.; Talbot, J.M. Grounds for Agreement: The Political Economy of the Coffee Commodity Chain. Rowman and Littlefield. 2004.; National Coffee Association. Historical Coffee Consumption Data. 2023.

The two World Wars of the 20th century profoundly reshaped the global coffee industry, from production and trade to consumption and culture. During World War...

Timeline

1914-1918

World War I: European governments impose coffee rationing and price controls; U.S. coffee consumption rises as European imports are disrupted

1917

The U.S. Food Administration, led by Herbert Hoover, encourages Americans to reduce coffee consumption to free supplies for troops

1939-1945

World War II: The U.S. military becomes the world's largest coffee buyer, supplying troops with coffee as a morale booster and stimulant

1940-1943

The U.S. imposes coffee rationing, limiting civilians to one pound every five weeks; Americans turn to chicory and grain substitutes

1940s

Instant coffee production expands massively to supply the military; brands like Nescafe and Maxwell House become household names

1942

The U.S. War Production Board mandates that all coffee sold to the military be instant, driving rapid innovation in freeze-drying technology

1946

U.S. coffee rationing ends; post-war coffee consumption surges, establishing the United States as the world's largest coffee consumer

1962

The first International Coffee Agreement is signed, establishing export quotas and price controls that govern global coffee trade for decades

Important People

Herbert Hoover

Led wartime food conservation efforts during World War I, encouraging Americans to reduce coffee consumption to ensure military supply.

Major Events

1917-1918

WWI coffee rationing

European and American governments imposed coffee rationing and price controls during World War I, encouraging civilians to reduce consumption to ensure military supply.

1941-1945

WWII military coffee program

The U.S. military became the world's largest coffee buyer, supplying troops with coffee as a morale booster. All military coffee was required to be instant, driving massive expansion of instant coffee production.

1942-1943

U.S. coffee rationing

The U.S. government imposed coffee rationing, limiting civilians to one pound every five weeks. Americans turned to chicory, grain-based substitutes, and reused coffee grounds.

1962

International Coffee Agreement

Postwar economic instability and coffee price volatility led to the International Coffee Agreement, which established export quotas and price controls governing global coffee trade until 1989.

Political Influence

During both World Wars, coffee was classified as a strategic commodity, subject to government rationing, price controls, and military procurement. The postwar International Coffee Agreement, partly motivated by Cold War concerns about communist influence in coffee-producing nations, shaped global coffee politics for nearly 30 years.

Religious Influence

During the World Wars, religious organizations and faith-based NGOs played a pivotal role in the distribution and cultural branding of coffee. The Salvation Army and the YMCA operated thousands of field 'huts' and mobile canteens, where coffee was provided to troops as a moral stimulant and a 'sobering' alternative to alcohol, which many religious leaders viewed as a threat to military discipline and spiritual integrity. This branding helped transition coffee from a generic commodity to a symbol of domestic comfort and Christian welfare. Economically, the collapse of the Ottoman Empire following World War I removed centuries of Islamic caliphal oversight from traditional coffee trade routes in the Levant and Arabian Peninsula, shifting control to secular colonial mandates. In the immediate aftermath of World War II, 'peace churches' like the Mennonite Central Committee and the Society of Friends (Quakers) integrated coffee into their humanitarian relief programs, establishing early ethical trade models that sought to provide economic stability to impoverished farmers in war-ravaged regions of the Global South.

Economic Influence

The World Wars transformed coffee economics. Wartime demand and government purchasing stabilized coffee prices for producing nations. The postwar International Coffee Agreement established a regulated market with export quotas and price bands that provided relative stability for coffee-producing nations from 1962 to 1989.

Interesting Facts

  • •During World War II, the U.S. military was the world's largest single coffee buyer, supplying millions of soldiers with coffee as both a stimulant and a morale booster.
  • •The U.S. government mandated that all coffee supplied to the military be instant, driving rapid innovation in instant coffee technology and establishing instant coffee as a consumer product after the war.
  • •During WWII coffee rationing, American civilians were limited to one pound of coffee every five weeks, leading to widespread use of chicory, grain substitutes, and coffee ground reuse.
  • •Nescafe, launched by Nestle in 1938, became a global brand during World War II as it was included in millions of military ration kits distributed to American GIs.
  • •The International Coffee Agreement of 1962, partly motivated by Cold War fears of communist influence in Latin American coffee nations, governed global coffee trade for nearly 30 years.
  • •Coffee was considered so important to troop morale during WWII that General George S. Patton called it 'as important as ammunition.'

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Arabica coffee (Coffea arabica) is a species of coffee plant native to the highland forests of Ethiopia and South Sudan. It is the most widely cultivated coffee species worldwide, accounting for approximately 60 to 70 percent of global coffee production. Arabica is prized for its complex flavor, refined acidity, and aromatic diversity, producing notes ranging from floral and citrus to chocolate and caramel depending on origin, variety, and processing.

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Coffea Robusta: The Hard-Body Coffee Species Explained

Robusta coffee (Coffea canephora) is the second most cultivated coffee species after Arabica, accounting for approximately 30 to 40 percent of global coffee production. Native to sub-Saharan Africa, Robusta is hardier, more disease resistant, and grows at lower elevations than Arabica. It contains roughly twice the caffeine of Arabica and produces a heavier body, lower acidity, and more bitter cup profile.

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Green coffee refers to raw, unroasted coffee beans that have been processed and dried but not yet subjected to the roasting process. Green coffee is the form in which coffee is traded internationally and stored long-term. It is stable for months to years when kept in proper conditions, unlike roasted coffee which degrades rapidly.

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<h2>Technical Specifications and Maintenance</h2><p>Commercial group heads are engineered to withstand continuous operation at pressures up to 12 bars, though the industry standard remains 9 bars. The internal seal is maintained by a group gasket, which requires replacement every 3 to 6 months in commercial environments as the elastomer hardens due to repeated thermal cycling. The assembly also houses a dispersion screw that secures the shower screen; in some designs, this screw incorporates a secondary dispersion block to further diffuse water flow. Periodic backflushing with chemical detergents like sodium percarbonate is required to remove polymerized coffee oils that accumulate behind the screen and inside the solenoid valve, which can otherwise impart rancid flavors to the espresso. Advanced machines may feature independent P.I.D. (Proportional-Integral-Derivative) controllers specifically for the group head to allow baristas to fine-tune the temperature for specific roast profiles, such as increasing heat to 96°C for light-roasted heirloom varietals to maximize solubility.</p>

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Related Book Chapters

  • •Chapter 1: The History of Coffee
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Learn more about The Complete World of Coffee →

Frequently Asked Questions

Sources

  • •Pendergrast, M. Uncommon Grounds: The History of Coffee and How It Transformed Our World. Basic Books. 2019.
  • •Topik, S. 'Coffee.' In: The World That Trade Created. Routledge. 2012.
  • •Lyons, K.E. The Complete World of Coffee. Lyons Den Publishing. 2024.
  • •Talbot, J.M. Grounds for Agreement: The Political Economy of the Coffee Commodity Chain. Rowman and Littlefield. 2004.
  • •National Coffee Association. Historical Coffee Consumption Data. 2023.

Continue Your Coffee Journey

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Editorial Standards & Trust

Keith E. Lyons

Keith E. Lyons

Author, Researcher & Coffee Educator

Keith E. Lyons is the author of The Complete World of Coffee and the publisher behind Lyons Den Publishing. A licensed trauma therapist turned specialty coffee writer, Keith blends scientific rigor with genuine passion for the craft of coffee.

Author of The Complete World of Coffee (600+ pages)Licensed trauma therapist — brings research methodology and scientific rigor to coffee writingIndependent publisher, founder of Lyons Den Publishing

Last Reviewed

August 21, 2026

Sources & References

(5)

Claims are cited to verifiable sources. Peer-reviewed research is marked.

  1. 1
    Pendergrast, M. Uncommon Grounds: The History of Coffee and How It Transformed Our World. Basic Books. 2019.
  2. 2
    Topik, S. 'Coffee.' In: The World That Trade Created. Routledge. 2012.
  3. 3
    Lyons, K.E. The Complete World of Coffee. Lyons Den Publishing. 2024.
  4. 4
    Talbot, J.M. Grounds for Agreement: The Political Economy of the Coffee Commodity Chain. Rowman and Littlefield. 2004.
  5. 5
    National Coffee Association. Historical Coffee Consumption Data. 2023.

Editorial Standards

  • • Fact-checked against peer-reviewed coffee science research and industry standards.
  • • Reviewed by the author with documented sources for every factual claim.
  • • Updated regularly; the "Last Reviewed" date reflects the most recent verification.
  • • Corrections are made promptly when new research or evidence emerges.

Our editorial process prioritizes accuracy, scientific rigor, and practical relevance for coffee enthusiasts and professionals alike.

Publisher

Lyons Den Publishing · Founded 2025 · San Diego, CA

Part of: Coffee History

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International Coffee Organization

The International Coffee Organization (ICO) is the main intergovernmental organization for coffee, founded in 1963 and headquartered in London, United Kingdom. I recognize the ICO as the primary global body that brings together exporting and importing governments to address challenges facing the world coffee sector. The organization operates under the International Coffee Agreement, which establishes the framework for international cooperation on coffee trade, sustainability, and development. The ICO publishes the Coffee Market Report and the Coffee Development Report, two of the most widely cited data sources on global coffee production, consumption, and trade flows. With 49 member countries representing approximately 98 percent of world coffee production and 67 percent of consumption, the ICO plays a central role in shaping coffee policy and promoting sustainable development across the global supply chain.

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The World Coffee in Good Spirits Championship (WCIGS) is the premier international competition celebrating the creative intersection of coffee craft and mixology, organized annually by the Specialty Coffee Association (SCA) since its inaugural event in 2005. I regard the WCIGS as the most imaginative of the World Coffee Championships, where national champions from over 25 countries compete to create coffee-based alcoholic beverages that demonstrate both technical bartending skill and deep coffee knowledge. Competitors must prepare five distinct beverages across two timed rounds: two warm coffee-alcohol drinks, two cold coffee-alcohol drinks, and a signature designer cocktail of their own creation. Judges evaluate each beverage on taste balance, creativity, technical execution, visual presentation, and the harmony between coffee character and spirit selection. The competition has driven the growth of the coffee cocktail movement worldwide, encouraging baristas to explore how espresso, cold brew, and filtered coffee interact with spirits like whiskey, rum, gin, and liqueurs. Past champions including Danijela Stanojevic (2022) have demonstrated that exceptional coffee cocktails require equal mastery of extraction science, flavor pairing theory, and classical bartending technique.

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