Coffee has never been better, or more interesting, than it is today. Coffee producers have access to more varieties and techniques than ever before and we, as consumers, can share in that expertise to make sure the coffee we drink is the best we can find. Where coffee comes from, how it was harvested, the roasting process and the water used to make the brew are just a few of the factors that influence the taste of what we drink. Champion barista and coffee expert James Hoffmann examines these key factors, looking at varieties of coffee, the influence of terroir, how it is harvested and processed, the roasting methods used, through to the way in which the beans are brewed.