The history of coffee starts with the story of Kaldi, a 9th-century Ethiopian goatherd who discovered coffee but was never mentioned in writing until 1671 AD.
From Ethiopia, coffee was said to have spread to Egypt and Yemen. The earliest credible evidence of either coffee drinking or knowledge of the coffee tree appears in the middle of the fifteenth century, in the Sufi monasteries of Yemen.
By the 16th century, it had reached the rest of the Middle East, Persia, Turkey, and northern Africa. Coffee then spread to Italy, and to the rest of Europe, to Indonesia, and to the Americas. Now, coffee is also found in Thailand.