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JournalCoffee Knowledge4 min read

Where coffee comes from.

The bean belt, the tropics, and why every great cup begins between two lines of latitude.

Coffee grows in a band around the earth known as the bean belt, roughly between 23.4° north and 23.4° south of the equator. Inside that band, altitude, rainfall, soil and season combine to create the conditions a coffee tree needs to produce fruit worth drinking.

01The bean belt

Draw a line at the Tropic of Cancer and another at the Tropic of Capricorn. Between them lies the only part of the world warm enough, and stable enough, for Coffea arabica to thrive. This is the bean belt, and almost every coffee you have ever tasted began there.

The belt is not a single climate. It contains high-altitude plateaus in East Africa, volcanic slopes in Central America, equatorial islands in the Pacific and monsoon valleys in India. Each origin imprints its own character on the seed.

02Why latitude matters

Coffee is a tropical understory plant. It needs year-round warmth without extremes, plenty of rainfall, and a dry season to ripen and harvest. Too far from the equator and frost kills the tree; too close to sea level and the heat rushes ripening and flattens acidity.

Altitude is the hidden variable. For every 100 metres gained, temperature drops and ripening slows. Slower ripening concentrates sugars and acids, which is why the finest lots often come from farms above 1,400 metres.

03Our place in the belt

Flying Frog buys across the belt rather than from a single farm. Our current collections come from El Salvador — high on the volcanic slopes of Santa Ana, between roughly 1,400 and 1,900 metres — and from Colombia, where smaller farms at similar altitudes work with different varieties and processing traditions.

The criteria stay the same wherever we look: traceable to a named producer, high-grown, and expressive enough to stand on its own as a light roast. Origins rotate with the harvest calendar, so the shelf changes through the year by design.

04From tree to roastery

The seed inside the cherry is not yet coffee. It must be picked, processed, dried, milled, rested, shipped, roasted and brewed before it becomes the cup in your hand. Every step either preserves what the farm created or erases it.

That is why we start with origin. You cannot roast quality into a bean that was not grown with care. The map is not decoration; it is the first page of the story.

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