Coffee is a brewed beverage with a distinct aroma and flavour prepared from the roasted seeds of the Coffea plant. The seeds are found in coffee "cherries", which grow on trees cultivated in over 70 countries, primarily in equatorial Latin America, Southeast Asia, South Asia and Africa.

Green (unroasted) coffee is one of the most traded agricultural commodities in the world.

Let's take a look at how coffee is processed and shipped in one of the biggest coffee exporting countries in the world, El Salvador.

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A worker carries a sack of freshly harvested coffee beans at the Santa Adelaida coffee co-operative in La Libertad, on the outskirts of San Salvador, El Salvador.

Once a family-owned coffee plantation split under a 1980 land reform, the Santa Adelaida coffee is now a co-operative dedicated to the production of organically-grown high ground coffee, which is certified by non-governmental organisation Rainforest Alliance, and exported to Germany, the United States, Britain and Japan. The coffee plantation is currently run by a co-operative of over 150 members.

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A worker pours coffee beans for washing at the Santa Adelaida coffee co-operative in La Libertad, on the outskirts of San Salvador.

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A worker picks ripe coffee beans at the Santa Adelaida coffee co-operative in La Libertad, on the outskirts of San Salvador.

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Workers clean and sort freshly harvested coffee beans at the Santa Adelaida coffee co-operative.

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A worker records the weight of coffee beans as they are being weighed at the co-operative.

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Workers clean and sort freshly harvested coffee beans at the co-operative.

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Workers stand next to sacks of freshly harvested coffee beans at the co-operative.

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A woman prepares tortillas for lunch at the co-operative.

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Freshly harvested coffee beans are seen at the co-operative.

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A worker dries coffee beans at the Santa Adelaida co-operative.

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A worker is seen through dried coffee beans at the co-operative.

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A worker holds a handful of coffee beans at the co-operative.

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A worker sorts dried coffee beans at the co-operative.

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Alberto Moya, 68, a member of the co-operative, poses at a warehouse of bourbon coffee packed for export.

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Workers walk towards a coffee plantation at the Santa Adelaida co-operative.