History and culture
Early coffee history: Ethiopia, Yemen and the first brewed coffee
Coffea arabica is botanically native to the highlands of southwestern Ethiopia; coffee as a brewed drink is documented as having developed later, in Yemen.
Each section below is labelled by how well-established its claims are — look for the label under each heading.
Where the coffee plant comes from
Documented history · Ethiopia
Coffea arabica originates in the highland forests of southwestern Ethiopia, where it still grows wild today. This is a matter of established botanical and genetic record, distinct from the separate question of when and where coffee was first brewed and drunk as a beverage.
Sources: Encyclopaedia Britannica coffee and coffeehouse history entries; The World Atlas of Coffee
The Kaldi legend
Widely repeated legend — not established fact
A popular story credits an Ethiopian goatherd named Kaldi with discovering coffee after noticing his goats became energetic from eating coffee cherries. This story is widely repeated in coffee marketing and casual writing, but it is not attested in any contemporary historical source — the earliest known versions of the tale appear centuries after coffee drinking was already established, and most historians treat it as folklore rather than a documented account of coffee's discovery.
Sources: Encyclopaedia Britannica coffee and coffeehouse history entries; The World Atlas of Coffee
Coffee as a brewed drink in Yemen
Documented history · 15th century · Yemen
The practice of brewing and drinking coffee is documented as having developed among Sufi religious communities in Yemen, most commonly dated to around the 15th century, where it was used to support long nights of prayer. Precise dating varies between historical accounts, and the exact route by which the plant or the practice reached Yemen from Ethiopia is not fully settled.
Sources: Encyclopaedia Britannica coffee and coffeehouse history entries; The World Atlas of Coffee
Mocha and the port that gave coffee a name
Documented history · Yemen
The Yemeni Red Sea port of Mocha became the dominant export point for coffee reaching the wider world for roughly two centuries, to the point that "mocha" entered several languages as a byword for coffee itself (later narrowing, confusingly, to mean specifically a chocolate-coffee drink in most contemporary café usage — CoffeeHQ's drinks catalogue uses the later, narrower sense). Yemeni coffee cultivation itself is documented as historically distinct from Ethiopia's: grown on steep, hand-built mountain terraces using local landrace varieties, rather than the small set of internationally standardised varieties grown in most other origins today (see CoffeeHQ's Yemen origin profile).
Sources: Encyclopaedia Britannica coffee and coffeehouse history entries; The World Atlas of Coffee
Related
Preparation traditions
How this history is practised today, in CoffeeHQ's international preparation atlas.