The bag of Kenya on our shelf lists two varieties, SL-28 and SL-34, because the farm grows them beside each other and the mill does not separate them. A varietal, as the word gets used on a bag, is that line: the kind of coffee plant the seed came from. SL-28 and SL-34 are two named selections of Coffea arabica, picked out by a government laboratory outside Nairobi in the 1930s and planted across Kenya's central highlands ever since. The name is genetics. It is not a flavor, not a grade, and not a promise.
What makes that line hard to read is that the same slot on a different bag holds a completely different kind of thing. Our Ethiopia says Heirloom, which is not one plant but thousands nobody has finished naming. Another bag might say Peaberry, which is not a plant at all. The word is the easy part. Working out what it is standing in for is the part worth twelve minutes.
Is it variety, varietal, or cultivar?
Three words, and the trade uses all three for the same thing. Daily Coffee News settled the grammar of this in 2017, and I am not going to restate it as though we worked it out. Ever Meister's piece puts it plainly: "While the term varietal correctly refers to the brewed liquid, it is not, as a matter of fact, the correct term for the subspecies of plant. That would be the coffee's variety." Varietal is an adjective that got promoted. A varietal coffee is a coffee made from one variety, the way a varietal wine is made from one grape.
The same piece has the cleanest statement of the second distinction, from Peter Giuliano: "The botanists reserve the term varieties for things that exist in the wild. Plants that are the result of human activity they describe with another word: cultivar." By that rule almost everything in a specialty bag is a cultivar. Somebody chose those trees, propagated them, and kept them going.
Our own page for Typica works through a live example of it: Typica has no single breeder and no release date, so it is properly a variety, while the regional selections made from it are cultivars in the narrower sense. Both things are true on one plant, a century apart.
So a varietal is a cup, a variety is a plant, and most of what we sell is technically a cultivar. Knowing which of the three words is correct will not help you choose a coffee, though, because all three point at the same line on the bag. What helps is knowing what that line is standing in for, and for that you need the test underneath it.
What makes something a variety in the first place?
There is a test, and it is worth knowing because it explains every strange entry you will ever see on that line. World Coffee Research says its catalog uses the definition set by the International Union for the Protection of New Varieties of Plants, and lists three conditions. The variety is distinct: "It is distinguishable from other varieties based on the above set of characteristics." The variety is uniform: "It can be precisely described by a set of characteristics and all the plants of this type look the same." The variety is stable: "The variety can be reproduced in such a manner that its characteristics are unchanged in the next generation."
Distinct, uniform, stable. Three plain words carrying a lot of weight. Distinct means you can tell it apart from its neighbors. Uniform means the plants in a field of it match. Stable means the seed breeds true, so the next generation is still the thing you named.
Hold that test up against the entries on real bags and the confusion resolves itself. Most of them fail it, and they fail it in different directions, which is why one rule never reads all of them.
Why does our Kenya list two varieties?
Because that is what is in the bag. SL-28 and SL-34 were both selected at the Scott Agricultural Laboratories in Kenya in the 1930s, and they have been planted alongside each other ever since. Most Kenyan coffee comes from smallholders who deliver ripe cherry to a cooperative wet mill, and the mill processes the day's cherry from hundreds of members together. Nobody is keeping the trees apart, so nobody can keep the seeds apart later. A Kenyan lot is usually a field blend, and an honest label says so.
Both plants pass the distinct-uniform-stable test on their own, and World Coffee Research rates each of them exceptional for quality potential at high altitude, a grade it gives very few varieties. SL-28 was selected in 1935 out of a population called Tanganyika Drought Resistant, and the brief at the time was drought tolerance rather than flavor. What the program also got was a tall, large-beaned, low-yielding plant with almost no defenses, susceptible to leaf rust, to coffee berry disease, and to nematodes. World Coffee Research also records its rusticity, noting it can be left untended for years or even decades at a time and then return to successful production. That combination is the reason old SL-28 trees are still bearing in Kenya and the reason farmers keep replacing them anyway.
Here is the part the two names on the label do not tell you, and it is my favorite fact in this whole territory. They are not the siblings they look like. World Coffee Research puts SL-28 in the Bourbon-Typica group as Bourbon-related, and puts SL-34 in the same group as Typica-related, noting that genetic testing pointed that way even though the historical record had it down as French Mission Bourbon stock. Two varieties that have shared a hillside and a reputation for ninety years, and they came down different branches. The label prints them as a pair because they arrive in the same sack, not because they are kin.
Why does Ethiopian coffee just say "Heirloom"?
Because there is no name to print. Arabica came from Ethiopia, and what grows there is the original population rather than a selection out of it. Our own record for the term does not dress it up: heirloom is "not a formal botanical classification but rather a broad, informal term used in the specialty coffee industry to refer to the landrace and wild Arabica varieties native to Ethiopia," a catch-all for thousands of genetically diverse and largely undocumented trees.
Run the test on it. Distinct? No, it is not one thing to distinguish. Uniform? No, the trees in one forest patch do not match each other. Stable? Nobody has checked, because nobody has catalogued the parents. Heirloom fails all three conditions, which is exactly why no catalog can list it and exactly why the word exists. It is a placeholder for a gap in the record, and it is an honest one. We have written the long version of that argument separately, including what the word does and does not guarantee about a cup.
What matters here is the category error. Heirloom and SL-28 sit in the same field on two of our bags and they are not the same kind of statement. One names a plant. The other says the plant has no name.
Is Peaberry a variety?
No, and this is the third kind of thing that shows up on that line. A coffee cherry normally holds two seeds with a flat face each. Sometimes it holds one, round. Our record for it says it straight: peaberry is "not a separate variety or cultivar but rather a natural mutation of the coffee seed." It can happen in any variety, in any country, in a share of the crop, and the mills sort those seeds out by screen after the fact.
Field Blend is the fourth. It is not a plant either; it is a description of how a lot was assembled, several varieties grown, picked and processed together on purpose. Both words get printed in the variety slot because the slot is where the bag has room, and buyers have learned to read it as a grab bag.
So the field holds at least four kinds of thing: a named selection, a catch-all for an uncatalogued population, a seed mutation, and a mixture. A varietal on a bag of coffee is whichever of those four the origin had available to print, and the origin decides that, not the roaster.
Why can't you plant a hybrid's seeds?
The stability condition is the one that catches people out, and our El Salvador is the clearest case of it on the shelf. Finca San Luis grows Centroamericano H1, which World Coffee Research describes as a first-generation hybrid from a cross between the rust-resistant T5296 and the Ethiopian landrace Rume Sudan. It is dwarf, highly resistant to leaf rust, and extremely high yielding, with production increases of 22 to 47 percent over the standard Central American varieties in breeding trials. On distinctness and uniformity it passes easily. You can pick it out of a field and the plants match.
Stability is where it stops. World Coffee Research is blunt about what happens if a farmer saves seed from it: "Seeds taken from hybrid plants will not have the same characteristics as the parent plants. This is called 'segregation.'" The catalog's instruction is that it "should only be reproduced through clonal propagation and purchased from trusted nurseries."
Read that as a cost rather than a curiosity, because that is what it is at the farm. A grower planting SL-28 can keep the variety going out of his own trees for as long as they live, which for SL-28 is a very long time. A grower planting an F1 hybrid buys plantlets from a laboratory every time he replants, in perpetuity, and the yield and the rust resistance are what he is buying them with. The variety name on that bag is not just a plant. It is a standing relationship with a nursery, and the reason the coffee exists at all is that somebody decided the trade was worth it.
This is also why the third condition is the one most likely to be quietly false on a label. Distinct and uniform are visible in a field. Stable is a claim about the next generation, and by the time anyone can check it the seed is already in the ground.
Does the variety name tell you how the coffee will taste?
Partly, and less than the label implies. Variety sets a ceiling and a shape. SL-28 grown high and processed cleanly gives a blackcurrant acidity that is hard to mistake for anything else, and World Coffee Research is careful to qualify its quality rating as exceptional specifically at high altitude. The same genetics planted low and warm do not produce it. Altitude, processing and drying all move the cup afterward, and any of them can move it further than the variety did.
This is where I have to be honest about our own shelf. We publish the variety on every bag we sell, and we keep a page for each one so a buyer can read the plant's history rather than take our word for the tasting notes. That is a real commitment and it has a real cost: the field has to hold all four kinds of thing above, so it cannot be read the same way twice, and our own storefront has not been consistent about it either. The block near the top of a product page calls it the varietal. The spec row underneath calls it the cultivar. The structured data we hand to search engines calls the whole set coffee varieties. Three labels, one field, and the customer is left to work out that they mean the same thing.
If you want one number to compare two bags, the variety is the wrong line to read. Our Kenya cups 91.5 and our Ethiopia cups 92.3, and the varieties behind those two scores are not comparable objects at all.
What should you do with the name on the bag?
Treat it as provenance rather than prediction. Three things it reliably tells you, and one it does not.
It tells you whether the origin keeps records. A bag that says SL-28 and SL-34 comes from a country with a research station, a naming convention and a century of paperwork. A bag that says Heirloom comes from a country whose coffee is older than the paperwork.
It tells you what the farmer accepted. Low-yielding, disease-prone varieties are chosen against the farmer's own interest, for quality, and the price has to cover that. When a bag names one of them, somebody upstream took the risk.
It tells you what to look up next. Every variety on our shelf has a page, and the pages carry the altitude bands, the disease profiles and the agronomy that actually explain the cup. That is more useful than a flavor wheel.
What it does not tell you is how the coffee will taste, on its own, without the altitude and the processing beside it. Anyone selling you a variety name as a flavor guarantee is selling you a shorthand. Read the line, then read the three lines around it.
Where to taste the argument: Kenya Kiambu is the bag with two names on that line, SL-28 and SL-34, washed and dried on raised beds, cupping 91.5. It ships in 250g, 2lb and 5lb. If you want the rest of the chain behind a coffee rather than just the plant, our origins and sourcing writing covers where coffee comes from and how it reaches Pensacola.
