Journalist Abdul-Rehman Malik leads us on a journey to Turkey as he investigates the forgotten history of coffee. He discovers that coffee was popularised by Sufi mystics in the Yemen who used the drink as a way of energising themselves during their nocturnal devotions. Originating in Ethiopia, finding its spiritual home in the Yemen, evading zealots and Sultans from Mecca to Constantinople, defying prejudice from Vienna to London – coffee made its mark wherever it went, facilitating radical new forms of social exchange.