The Story of Coffee

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6 Questions

Where did coffee originate?

Ethiopia

What percentage of coffee plants are Arabica?

70%

What is the purpose of the washed process in coffee bean production?

To remove the skin and pulp

What is the effect of light roasting on coffee beans?

It adds a fruitier flavor to the coffee

What is a potential health benefit of moderate coffee consumption?

All of the above

What is a negative effect of excessive coffee consumption?

Dehydration and stomach upset

Study Notes

History of Coffee

  • Originated in Ethiopia over 1,000 years ago
  • Legend says a goatherd named Kaldi discovered coffee after noticing his goats became more energetic after eating coffee cherries
  • Spread throughout the Arabian Peninsula in the 15th century
  • Introduced to Europe in the 17th century, where it became popular in coffeehouses

Coffee Plant

  • Coffee plants are evergreen shrubs that belong to the genus Coffea
  • There are over 100 species, but only two are widely cultivated: Arabica (70%) and Robusta (30%)
  • Coffee plants require a subtropical climate with high altitudes and well-defined wet and dry seasons

Coffee Bean Production

  • Coffee beans are harvested from coffee cherries, which contain two seeds (beans)
  • Beans are processed using one of two methods: washed or natural
  • Washed process removes the skin and pulp, while natural process leaves it intact
  • Beans are then dried, hulled, and sorted by size and quality

Coffee Roasting

  • Roasting transforms the green coffee beans into the brown, aromatic coffee we drink
  • Roast levels range from light to dark, affecting flavor and aroma
  • Light roasts have more acidity and fruit notes, while dark roasts have more body and bitterness

Coffee Brewing

  • Brewing methods include drip, French press, espresso, pour-over, and cold brew
  • Each method yields a unique flavor profile and texture
  • Factors affecting flavor include coffee-to-water ratio, water temperature, and brewing time

Coffee and Health

  • Moderate coffee consumption (3-4 cups/day) may have health benefits:
    • Improves cognitive function and alertness
    • Lowers risk of type 2 diabetes and certain cancers
    • May reduce mortality rate
  • Excessive consumption can lead to negative effects:
    • Insomnia and anxiety
    • Increased heart rate and blood pressure
    • Dehydration and stomach upset

Explore the history, production, and health effects of coffee. Learn about the origins, plant species, bean production, roasting, brewing, and health benefits of coffee.

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