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Introduction

A cup of black coffee

Coffee is a beverage prepared from roasted coffee beans. Darkly colored, bitter, and slightly acidic, coffee has a stimulating effect on humans, primarily due to its caffeine content. It has the highest sales in the world market for hot drinks.

Seeds of the Coffea plant's fruits are separated to produce unroasted green coffee beans. The beans are roasted and then ground into fine particles that are typically steeped in hot water before being filtered out, producing a cup of coffee. It is usually served hot, although chilled or iced coffee is common. Coffee can be prepared and presented in a variety of ways (e.g., espresso, French press, caffè latte, or already-brewed canned coffee). Sugar, sugar substitutes, milk, and cream are often used to mask the bitter taste or enhance the flavor.

Though coffee is now a global commodity, it has a long history tied closely to food traditions around the Red Sea. The earliest credible evidence of coffee drinking in the form of the modern beverage appears in modern-day Yemen from the mid-15th century in Sufi shrines, where coffee seeds were first roasted and brewed in a manner similar to current methods. The Yemenis procured the coffee beans from the Ethiopian Highlands and began cultivation. By the 16th century, the drink had reached the rest of the Middle East and North Africa, later spreading to Europe. In the 20th century, coffee became a global commodity, creating different coffee cultures around the world. (Full article...)

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A front window of a Starbucks coffee shop damaged in the 2010 G20 Toronto summit protests
Starbucks, an American coffee company and coffeehouse chain, has been the subject of multiple controversies. Public and employee criticism against the company has come from around the world, including a wide range issues from tax avoidance in Europe, anti-competitive practices in the United States, human rights issues in multiple countries, and labor issues involving union busting, questions about pay equity, and ethics in partnerships in Africa. (Full article...)
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The following are images from various coffee-related articles on Wikipedia.

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Caffè lungo

Lungo (Italian for "long") is a coffee beverage made by using an espresso machine to make an Italian-style coffee – short black (a single espresso shot) with more water (generally twice as much), resulting in a larger coffee, a lungo.

A normal serving of espresso takes from 18 to 30 seconds to pull, and fills 25 to 30 millilitres, while a lungo may take up to a minute to pull, and might fill 50 to 60 millilitres. Extraction time of the dose is determined by the variety of coffee beans (usually a blend of Arabica and Robusta), their grind and the pressure of the machine. It is usually brewed using an espresso machine but with two times the amount of water to the same weight of coffee to make a much longer drink. (Full article...)

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A latte macchiato
A latte macchiato
Credit: Eigenes Bild
A latte macchiato, which literally means stained milk. This refers to the method of preparation, wherein the milk gets "stained" by the addition of espresso.

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