Percolate
Coffee varieties (like Bourbon, Typica, Gesha, and SL28) are genetically distinct strains of Arabica, each producing a different flavor profile. Bourbon tends toward sweetness and chocolate; Gesha is intensely floral and tea-like; SL28 is boldly fruity. Knowing the variety on the bag is one of the fastest ways to predict what will be in your cup.
Pick up almost any specialty coffee bag and you’ll find a word tucked below the origin — Bourbon, Caturra, Gesha, SL28, Typica. Most shoppers glide past it. That’s a missed opportunity: variety is one of the clearest predictors of flavor in the bag, and once you learn to read it, you’ll choose better coffee every time.
A question we hear often: the words variety, varietal, cultivar, and species get used interchangeably on bags and menus, but they mean different things.
Species is the broadest level. There are over 100 species of coffee, but the main three are Arabica, Robusta, and Liberica. Specialty coffee shops rarely sell anything but Arabica, which is prized for its flavor and aroma over Robusta’s harsher, more bitter profile.
Variety (or cultivar) sits one level below species. Arabica coffee includes many different varieties, also called cultivars. Each one is a genetic group shaped by natural changes, selective breeding, and adapting to different growing conditions — and these varieties affect both how coffee tastes and how the plants grow.
Think of it exactly like apples: every apple is Malus domestica, but a Granny Smith and a Honeycrisp are wildly different eating experiences. Like apples, different coffee varieties come in different shapes and sizes, and when brewed, they have noticeably different flavors and textures. Bourbon, Gesha, Typica, SL28 — these are all 100% Arabica, yet each produces a cup that a trained taster can often identify blind.
Transparency is the short answer. A specialty coffee bag label can contain a surprising amount of information: a roast date, origin details down to the farm name, a processing method, tasting notes, an altitude, and a variety. For a new coffee buyer, it can feel like reading in a foreign language. But the more information a roaster shares, the more confidence they have in what they’re selling.
The more transparent the label, the more confident the roaster. Vague labels — “100% premium Arabica” with no other info — often signal commodity-grade beans. When a roaster prints the variety, they’re signaling that it materially affects the cup — and they’re right. Variety is arguably the most under-used data point available to a home coffee buyer.
If you’re building a coffee shelf and logging bags systematically (something Percolate’s label-scan feature makes easy), tracking variety alongside origin and process is what starts turning a collection of bags into a genuine taste education.
This one comes up a lot: Typica isn’t flashy, but it’s the genetic foundation almost everything else descends from.
Typica is the great-grandparent of all coffee varieties. First transported from Ethiopia to Yemen in the 1400s, this original Arabica spread globally, spawning Bourbon and countless mutations. Though low-yielding today, its clean, chocolatey sweetness remains prized. Typica is the genetic base for many other varieties. Known for its excellent cup quality, it produces sweet, clean, and well-balanced coffees with complex acidity and subtle fruit and floral notes — but it has a high-quality cup at the cost of lower yield and susceptibility to disease.
In the cup, expect elegance over drama: mild brightness, dried fruit undertones, and a refined, almost restrained sweetness. It won’t punch you in the face with berries the way a natural Ethiopian will, which makes it an excellent reference coffee — a clean baseline against which to compare everything else.
No whiskey involved — though the sweetness might make you wonder.
Bourbon is named after the island of Bourbon (now Reunion), where it was first cultivated in the 18th century. It originated as a natural mutation of Typica and quickly gained recognition for its sweeter, fuller cup profile. Compared to Typica, Bourbon typically has a slightly higher yield and more pronounced sweetness — it’s a go-to choice for those who enjoy chocolatey, nutty coffees with a creamy, comforting finish.
Named for an island off the coast of Madagascar, Bourbon is one of the world’s most culturally and genetically important arabica varieties — and a parent of numerous other coffee varieties. Bourbon delivers brown sugar-like sweetness, fruit notes like cherry and peach, and a round body.
Bourbons from Latin America (Rwanda and El Salvador also grow outstanding examples) are among the most beginner-friendly specialty coffees: crowd-pleasing flavor, reliable sweetness, and an approachable cup whether brewed as pour-over or drip. If you enjoy the tasting notes on your current bag but aren’t sure why it tastes that way, there’s a reasonable chance Bourbon genetics are somewhere in the background.
Readers frequently ask about the dramatic price tags attached to Gesha — some bags push past $50, and at auction, the numbers get truly absurd.
Few coffee varieties have captured global attention to the same extent as Gesha, sometimes spelled Geisha. The variety was first found in Ethiopia’s Gesha region. It spread through research and farming programs before becoming famous in Panama. During the 2004 Best of Panama competition, Gesha impressed judges with its intensely floral cup profile — a quality rarely found in coffee. Gesha coffee is known for rare qualities such as an intense floral aroma, a tea-like body, bright citrus acidity, and notes of jasmine and bergamot.
The price is a function of scarcity and cost. Gesha cultivation presents significant challenges: the plants produce relatively low yields and require ideal growing conditions to achieve their full flavor potential. For farmers, planting Geisha is risky but rewarding — when conditions are right, the variety produces extraordinary coffees, but cultivation remains costly and risky. To put numbers to it: in 2019, a micro-lot of Panama Geisha from Hacienda La Esmeralda sold for $1,029 per pound at auction. Then in 2024, a record-breaking batch from Elida Estate fetched over $10,013 per kilogram — cementing Geisha’s status as the world’s most coveted coffee.
Is it worth buying? Once. You should experience a well-brewed Gesha at least once to understand what “floral” and “tea-like” actually mean in a coffee context — it recalibrates your entire flavor reference frame.
This one comes up a lot in specialty coffee circles, because Caturra and Catuai are everywhere on bags from Colombia, Costa Rica, and Honduras.
Caturra is a genetic mutation of Bourbon, first identified outside of a village called Caturra in Brazil. This variety was selected and cultivated for its smaller plant size and higher level of production compared to Bourbon. Caturra tastes similar to Bourbon, but is somewhat brighter. Think of it as Bourbon’s more compact, slightly livelier sibling — less body, more snap.
Catuai is a cross between highly productive Mundo Novo and compact Caturra, bred by the Instituto Agronomico of Sao Paulo State in Campinas, Brazil. This variety is prominent throughout Central America — for example, Catuai is the most common variety grown in Honduras. Its flavor profile leans chocolatey and sweet with mild acidity — reliable and consistent, which is exactly why it dominates commercial and specialty farms alike.
Neither is a budget knockoff. They simply represent breeders prioritizing yield and disease resistance without sacrificing too much cup quality. For everyday drinking, a well-grown Caturra or Catuai from a quality farm will outperform a poorly grown Bourbon every time.
Two of the most famous African coffee varieties, SL28 and SL34, are closely linked to Kenyan specialty coffee’s distinctive flavor identity. Around the 1930s, researchers at Scott Agricultural Laboratories (SL) in Kenya selected these varieties with the aim of improving coffee productivity and drought tolerance. SL28 handles drought well, which is why it’s still widely grown in Kenya’s highlands.
In the cup, SL28 is one of the most distinctive varieties in specialty coffee: SL28 is among the most well-known and well-regarded varieties of Africa. First identified in Kenya, there are many SL28 trees in the country that are 60-80 years old and still productive. It’s known for grapefruit-like brightness, savory flavor similar to sundried tomato, and a syrupy body.
That savory, almost wine-like depth is why Kenya AA and Kenya SL28 lots earn some of the highest scores and prices in Africa. If you love your coffee bold and acidic — the kind that makes your jaw tingle — SL28 is your variety.
Use this table as a shortcut when you’re standing in front of a coffee wall or building your next shelf order.
| Variety | Flavor Profile | Body | Best Brew Match | Where You’ll Find It |
|---|---|---|---|---|
| Typica | Clean, sweet, mild dried fruit, floral | Light-Medium | Pour-over, drip | Latin America, Indonesia, Papua New Guinea |
| Bourbon | Brown sugar, cherry, chocolate, round | Medium | Pour-over, drip, espresso | Rwanda, El Salvador, Colombia, Brazil |
| Caturra | Bright citrus, sweet, slightly lighter than Bourbon | Light-Medium | Pour-over | Colombia, Central America |
| Catuai | Chocolate, caramel, mild, consistent | Medium | Drip, espresso | Honduras, Costa Rica, Brazil |
| Gesha / Geisha | Jasmine, bergamot, peach, tea-like, intensely floral | Light | Pour-over (V60, Chemex) | Panama, Colombia, Ethiopia |
| SL28 / SL34 | Blackcurrant, grapefruit, tomato, syrupy | Full | Pour-over, drip | Kenya |
| Ethiopian Heirloom | Blueberry, jasmine, citrus, complex and varied | Light-Medium | Pour-over | Ethiopia (Yirgacheffe, Sidama, Guji) |
Readers frequently ask whether it’s even worth knowing the variety if the roast level and processing method are going to override it anyway.
The honest answer: all three interact, and none cancels the others out. Think of variety as setting the flavor ceiling — the genetic potential of the plant. Processing then determines how much of that potential is expressed (a natural-processed Bourbon will taste fruitier and heavier than a washed one from the same farm), and roast level determines how much origin character survives the heat.
A dark-roasted Gesha will lose most of its signature floral notes to roast character. A washed SL28 will be brighter and cleaner than a natural-processed SL28, but both will still carry that distinctive blackcurrant-grapefruit backbone. Varietals shape the foundation of your coffee’s flavor. Each one has specific needs in terms of altitude, climate, and care, and each reacts differently to fermentation, roasting, and brewing.
This is why logging all three variables — variety, process, roast — when you cup a coffee builds a genuinely useful personal taste database over time. Percolate’s cupping note structure is designed exactly for this: once you’ve logged a dozen bags with variety noted, patterns emerge fast. You might discover you consistently prefer washed Caturras, or that every natural Bourbon you’ve tried has landed in your top ten.
According to data from World Coffee Research, in Brazil — the world’s largest coffee-producing country — 97.55% of coffee plants come from Bourbon and Typica genetics, which tells you just how dominant these two foundational varieties are across the entire global supply chain.
It happens, especially with blends or with coffees from regions (like Ethiopia) where individual varieties are nearly impossible to separate at the processing level.
When you see “Ethiopian Heirloom” on a coffee bag, it usually refers to traditional coffee types that have naturally evolved or been cultivated by small-scale farmers for generations. Many of these varieties are unnamed or locally named, contributing to the extraordinary flavor complexity of Ethiopian coffees. The precise number of different varieties that exist in the world is unknown. Ethiopia alone has more than 10,000 identified and distinguishable varieties collected and growing.
For blends, the variety information is simply not surfaced because multiple varieties are combined to produce a consistent profile. That’s not a red flag — but if you’re on a single-origin bag with no variety listed, it’s reasonable to ask the roaster. The best specialty roasters know exactly what’s in the bag and are happy to share it. Check the roaster’s website too; many print full lot data there even when it doesn’t fit on the physical label.
What does ‘variety’ mean on a specialty coffee bag? Variety (or varietal) refers to the specific genetic strain of Coffea arabica used. It works like grape varieties in wine — Bourbon, Gesha, Typica, SL28, and Caturra all have distinct flavor profiles driven by their genetics, independent of processing or roast level.
Is Gesha (Geisha) coffee really worth the high price? For many specialty drinkers, yes. Gesha produces a uniquely floral, tea-like, bergamot-forward cup that no other variety replicates. Its low yield and delicate growing conditions drive the price — some micro-lots have sold for thousands of dollars per pound at auction — but even an entry-level Gesha is a genuinely different experience.
What is the difference between Bourbon and Caturra? Caturra is a natural dwarf mutation of Bourbon discovered in Brazil. It shares Bourbon’s sweetness but tends to be a little brighter and more citrusy. Caturra also produces higher yields on smaller plants, making it more common in Central America and Colombia.
What does ‘Ethiopian Heirloom’ mean on a coffee bag? Ethiopia has more than 10,000 identified Arabica varieties, many unnamed or known only by local designation. When a bag says ‘Ethiopian Heirloom,’ the roaster is acknowledging the coffee comes from a mix of traditional, unclassified wild varieties — which is part of why Ethiopian coffees have such extraordinary diversity and complexity.
Does variety matter more than processing or roast level? All three interact. Variety sets a flavor ceiling — the genetic potential of the plant. Processing and roast then shape how much of that potential you taste. Knowing all three together gives you the clearest picture of what to expect in the cup.
What does 'variety' mean on a specialty coffee bag?
Variety (or varietal) refers to the specific genetic strain of Coffea arabica used. It works like grape varieties in wine -- Bourbon, Gesha, Typica, SL28, and Caturra all have distinct flavor profiles driven by their genetics, independent of processing or roast level.
Is Gesha (Geisha) coffee really worth the high price?
For many specialty drinkers, yes. Gesha produces a uniquely floral, tea-like, bergamot-forward cup that no other variety replicates. Its low yield and delicate growing conditions drive the price -- some micro-lots have sold for thousands of dollars per pound at auction -- but even an entry-level Gesha is a genuinely different experience.
What is the difference between Bourbon and Caturra?
Caturra is a natural dwarf mutation of Bourbon discovered in Brazil. It shares Bourbon's sweetness but tends to be a little brighter and more citrusy. Caturra also produces higher yields on smaller plants, making it more common in Central America and Colombia.
What does 'Ethiopian Heirloom' mean on a coffee bag?
Ethiopia has more than 10,000 identified Arabica varieties, many unnamed or known only by local designation. When a bag says 'Ethiopian Heirloom,' the roaster is acknowledging the coffee comes from a mix of traditional, unclassified wild varieties -- which is part of why Ethiopian coffees have such extraordinary diversity and complexity.
Does variety matter more than processing or roast level?
All three interact. Variety sets a flavor ceiling -- the genetic potential of the plant. Processing and roast then shape how much of that potential you taste. A natural-processed Bourbon will taste very different from a washed Bourbon from the same farm. Knowing all three together gives you the clearest picture of what to expect in the cup.
What coffee variety is best for beginners?
Bourbon and Caturra are great starting points -- both are widely available, forgiving to brew, and deliver the sweet, balanced, approachable profiles that most people enjoy immediately. Typica is another classic choice with clean, elegant flavor. Save Gesha for once you've built a reference point for comparison.