Knowledge Base
Coffee & Tea Guides
Brew better and explore more — buying guides, how-tos, and explainers for every coffee and tea ritual.
Explainer
Coffea Affinis: The Coffee Species That Was Lost, Then Found
A wild West African species that dropped out of the botanical record for generations, turned up again in recent forest survey work, and has never been farmed or reliably tasted — plus what 'lost' actually means when a coffee species makes the news.
Explainer
Coffea brevipes: The Short-Stalked Wild Coffee of West-Central Africa
A wild forest shrub of the west-central African understorey that nobody has ever farmed. Coffea brevipes shows exactly what a species name encodes about a plant — and what it never encodes at all.
Explainer
Coffee in Antarctica: The One Place Where Planting It Is Banned
Every other place that grows no coffee is stopped by physics or by economics. Antarctica adds a third barrier almost nobody thinks about, which is permission, and that makes it the clearest case on earth of a place that has decided what it is for.
Explainer
Nauru Coffee: The Island That Shipped Its Own Soil Away
A tropical island on the equator with no frost, no cool season and no shortage of heat — and still no coffee, because the interior plateau that held its only deep soil was a phosphate deposit that was dug out and shipped away.
Explainer
Greenland Coffee: A Culture Built on the House, Not the Bean
The world's largest island grows not a single coffee tree, and has built one of the most distinctive coffee customs anywhere regardless. What kaffemik reveals about what a coffee culture is actually for.
Explainer
Iceland Coffee: Free Heat, and Still No Coffee Trees
One of the world's heaviest coffee-drinking countries grows none of it — in a place where geothermal heat is so abundant that bananas ripen indoors. Why coffee still fails there is the clearest lesson in greenhouse growing anywhere.
Explainer
North Korean Coffee: What Can and Cannot Be Known
North Korea is not a coffee origin, and the climate settles that part outright. The harder question is which of the many confident claims about coffee inside the country the evidence can actually carry.
Explainer
Montserrat Coffee: An Island That Lost Its Farmland at Once
Montserrat grows no coffee, and climate has nothing to do with it. This is the island where the farmland was there - the young volcanic soils, the villages, the capital, the port - and then, over a few seasons, was not.
Explainer
Maldives Coffee: When There Is No Land to Argue About
The Maldives is warm, wet and thoroughly coffee-drinking, and it grows none at all. Its constraint is not the quality of the land but the quantity of it: thin coral sand over a fragile freshwater lens, split into many small islands where every square metre is already spoken for.
Explainer
Wamena Coffee: A Highland Valley That Doesn't Need to Sell
A genuinely high-altitude arabica from an inland valley in the eastern Indonesian highlands, grown by households whose gardens already feed them, which is exactly why the coffee can be superb and never dependable.
Explainer
Saint Lucia Coffee: An Agriculture Built on an Expired Privilege
A Windward island with volcanic slopes, deep soils and abundant rain grows almost no coffee. The explanation sits in a trade arrangement that reorganised every part of its farming around bananas, and in what stayed behind when that arrangement ended.
Explainer
Samoan Coffee: A Small Origin Shaped by Who Is Home to Pick
Samoa's coffee grows on fertile volcanic ground with dependable rain, and stays almost invisible anyway. The reason is not soil or altitude but the few weeks each year when someone has to walk the rows.
Explainer
Hainan Coffee: The Crop That Came Home With Migrants
China's other coffee is not arabica and not on the mainland. Hainan grows robusta on a tropical island, and it arrived in the least usual way an origin can — carried home by people coming back.
Explainer
Omani Coffee: The Crop That Lives Inside a Three-Month Monsoon
Oman grows a little coffee, and only in one place: a narrow strip of the Dhofar escarpment that spends three months a year inside monsoon fog. Why a seasonal cloud bank does the job altitude does everywhere else, and why that puts a hard ceiling on the crop.
Explainer
Andaman Coffee: Where the Growable Area Is a Legal Number
Coffee does grow in the Bay of Bengal islands, in small state-established and smallholder plantings the coffee world has never encountered. The reason it stays small is unlike any other origin's: the limit is written on a land-classification map, not a rainfall map.
Explainer
Cuban Coffee Growing: The Origin That Imports Its Own Drink
Cuba's coffee mountains are still there, still shaded, still hand-picked — and the island still brings coffee in from outside to fill its own cups. The reason is structural, not agricultural: one buyer, one channel, and a tree crop that faded quietly for decades.
Explainer
Norfolk Island Coffee: The Origin That Sells Where It Grows
A small Australian island in the South Pacific grows, processes and roasts its own coffee, then sells almost all of it to the visitors who arrive beside the trees.
Explainer
California Coffee: Grown Under Avocados, Sold as a Rarity
Coffee really is farmed in California, on a thin fog-cooled coastal strip, tucked under avocado canopies on slopes far too small and steep for a harvester. That constraint is exactly why it is sold as a rarity rather than as a crop.
Explainer
Solomon Islands Coffee: The Tree That Pays in Year Four
Coffee grows in the hills of Guadalcanal, but it has never become an industry. The reason is a clock rather than a climate: the competing land use pays this season.
Explainer
Guadeloupe Coffee: A Revival Built Backwards From a Name
The island's coffee industry vanished, but its name did not. On the volcanic slopes of Basse-Terre, a very small revival is being reconstructed from the name outwards, closer to how a wine region defends a place-name than to how a coffee origin usually grows.
Explainer
Nganda and Erecta: Uganda's Robusta Types, Named by Shape
Uganda has two long-recognized robusta types, and the only thing that ever separated them was the silhouette of the bush. What that distinction is worth on a farm, and what happened when researchers checked it against the genetics.
Explainer
Blawan Pasumah Coffee Variety: When the Name Is the Document
Blawan Pasumah is an Indonesian arabica selection whose compound name joins a long-established estate on the Ijen highlands of East Java with an upland region of southern Sumatra. Read the name apart and it explains how a whole family of Indonesian variety names works — and how little the public record certifies about this one.
Explainer
Coffea Magnistipula: The Wild Coffee That Tests What a Species Is
A wild forest species from west-central Africa that nobody farms and nobody drinks: a low, unbranched plant whose cupped stipules catch rain and leaf litter on the rainforest floor. What is genuinely known about it, and why a plant this unlike a coffee tree shows that species boundaries are judgements, not fixed facts.
Explainer
Coffea Salvatrix: The Wild Coffee Named for a Rescue That Never Came
A wild coffee species of southeastern Africa carrying a name that means rescuer, reported low in caffeine, and never once farmed, traded or credibly tasted in nearly a century.