Bourbon Coffee Variety: The Parent Stock Behind Caturra, Pacas and Villa Sarchi

Updated: September 13, 2026

3 key takeaways

• Two parallel branches left Yemen: Typica by way of India and Java, Bourbon by way of Bourbon Island. Neither descends from the other.
• Caturra, Pacas and Villa Sarchi are natural Bourbon mutations, each found in a different country and each more compact than the parent.
• SL28 sits in the Bourbon genetic group, SL34 in the Typica group, despite the French Mission label attached to its origin story.

One claim shows up on variety sheets everywhere: Bourbon is a mutation of Typica. Genetic work says otherwise. Typica and Bourbon are two parallel branches of the same small stock of trees taken out of Ethiopia and grown in Yemen, and it is the second of those branches that produced most of the cultivars planted across Latin America today. Reading Bourbon properly means reading a family tree rather than a tasting note.

Did Bourbon descend from Typica, or from a separate Yemeni line?

From a separate line. The trees taken out of Ethiopia and cultivated in Yemen gave rise to two genetic groups, known as the Bourbon group and the Typica group. The Typica branch split off when Dutch traders shipped seed from the Malabar coast of India to Batavia in 1696 and 1699. The Bourbon branch came from three direct attempts to move Yemeni seed to Bourbon Island, recorded in 1708, 1715 and 1718, of which only part of the second and third shipments survived.

So Bourbon has no Typica ancestor. It has a Typica cousin. The coffee stayed on the island until the middle of the 19th century, when French Spiritan missionaries carried it outward: a mission at Zanzibar in 1859, one at Bagamoyo in 1862, one at Bura in the Kenyan Taita Hills in 1893. The American story starts around 1860 near Campinas in southern Brazil, and moves north from there.

This split origin explains an oddity that keeps surfacing in Kenyan lot descriptions. SL28, selected in 1935 at the Scott Agricultural Laboratories from the Tanganyika Drought Resistant population, does belong to the Bourbon group. SL34, selected from a tree labelled French Mission at Loresho, ought to be a Bourbon too, since French Mission coffee came from Réunion seed planted by those same missionaries. Recent genetic testing places it in the Typica group instead, which suggests the origin story attached to SL34 is simply wrong.

Which countries still plant the original Bourbon rather than its offspring?

Fewer than most people assume. In Latin America the Bourbon variety proper holds on mainly in El Salvador, Guatemala, Honduras and Peru. Elsewhere on the continent its children have taken the ground.

• Central America: El Salvador remains the country most closely tied to the parent stock, with documented old plantings, followed by Guatemala and Honduras.
• South America: Brazil was the entry point in 1860, but it is also where Caturra, Mundo Novo and Catuai appeared and displaced it; Peru still keeps Bourbon in production.
• East Africa: Rwanda and Burundi are widely planted with material of Réunion origin, though World Coffee Research notes that none of these East African populations exactly matches the distinct Bourbon variety found in Latin America.
• La Réunion: the island of departure is no longer a volume producer, but it remains the historical reference point of the whole lineage.

How do you recognise Bourbon in the cup?

The steadiest marker is sweetness: brown sugar, honey, light caramel, carried on a rounded acidity rather than a cutting one. Red fruit follows, cherry and strawberry first, then a cocoa note on the finish. None of it is spectacular in isolation, and that is the point. This is the reference profile against which tasters place everything else.

That profile passes to the descendants unevenly, which turns cupping into a way of reading the family tree. Caturra, which is nothing more than a dwarf Bourbon, keeps the bright acid frame but gives up some of the roundness. Pacas, the same mutation found in El Salvador, stays closer to the parent. Variety catalogues rate Bourbon's quality potential at altitude one notch above Caturra, Pacas and Villa Sarchi, which is the reference-sheet phrasing of something cupping tables have shown for years.

In practice a filter brew at 92 to 94°C and a ratio near 1:15 is enough to pull that sweet frame forward without forcing it.

What actually separates red, yellow and orange Bourbon?

The colour of the ripe cherry, and botanically not much else. These remain the same variety; what changes is fruit pigment and, to a lesser degree, how the tree behaves at harvest.

Red Bourbon

The reference form, the one that travelled from La Réunion. Cherries turn red, ripening is progressive and easy to read by eye, which supports precise selective picking. This is the form the dwarfing mutations arose from.

Yellow Bourbon

Bourbon Amarelo was first examined in 1930 at Pederneiras in São Paulo state, and work by the Instituto Agronômico de Campinas gives it a double possible origin: either a mutation of red Bourbon, or a recombinant from natural hybridisation with Amarelo de Botucatu. The IAC selected plants at Jaú in 1945 to produce the cultivar distributed today. In the cup it gives more sugar and less acidity. In the field, yellow ripeness reads poorly from a distance, which complicates selective picking at scale.

Orange Bourbon

The least documented of the three. Orange-cherry lots are sold out of El Salvador and Colombia, and the trade presents them as one more colour mutation, but no reference variety catalogue currently describes orange Bourbon as an established variety. Treat the label as information about fruit colour, not about verified ancestry. The Pink Bourbon case is clearer still: genetic testing on samples traded under that name does not place them in the Bourbon lineage at all.

Why did growers replace Bourbon with its own descendants?

Mostly because of how the plant is built. Bourbon is a tall tree, planted at 3,000 to 4,000 stems per hectare under single-stem pruning, and it gives its first crop in year four. Caturra, Pacas and Villa Sarchi all carry the same single-gene dwarfing mutation: compact stature, tighter internodes, planting densities of 5,000 to 6,000 stems per hectare and first production in year three. On the same land the grower harvests more, and sooner.

The switch happened country by country. Caturra reached Guatemala in the 1940s and eventually accounted for close to half of Colombian production, until a programme launched in 2008 replaced more than three billion coffee trees with the Castillo variety. Pacas now represents roughly 25% of El Salvador's output. Villa Sarchi stayed largely Costa Rican, with an introduction to Honduras in 1974.

Disease pressure played its part too, since Bourbon is rated susceptible to leaf rust, nematodes and coffee berry disease. That strand of the story, and the cultivars bred in response, belongs to the separate subject of introgressed varieties.

How much of today's arabica traces back to Bourbon?

An overwhelming share, to the point where cultivated arabica has a genuine genetic bottleneck. World Coffee Research reports that in Brazil, which accounts for 40% of world production, 97.55% of coffee cultivars derive from Typica and Bourbon. The two branches also crossed back into each other: Mundo Novo is a natural Bourbon and Typica hybrid discovered in 1943, and Catuai, released in 1972 after pedigree selection, crosses Mundo Novo with yellow Caturra.

Two clarifications keep the tree honest. Maragogipe, often filed under Bourbon by mistake, is a Typica mutation found near the Brazilian town of Maragogipe in 1870. And Villa Sarchi, like Caturra, was later used as the compact parent in a family of cultivars bred in the 1970s; those crosses belong to a different story from the parent stock itself.

How do Bourbon, its mutations and related varieties compare?

Are Bourbon Pointu and Laurina the same plant as Bourbon?

No, and the confusion is understandable because both names share an island. Bourbon Pointu, also called Laurina, is a distinct variety that arose as a mutation on Bourbon trees in La Réunion. The tree takes a conical shape, the beans stretch to a point, hence the name, and the caffeine content falls to roughly 0.6% of green bean weight against 1.2 to 1.5% for a standard arabica.

The explanation lies in how the island was settled with coffee. The entire Réunion population descends from a very small number of surviving trees, self-pollination brought recessive traits to the surface, and growers deliberately selected and multiplied the conical trees with pointed seeds. Bourbon Pointu is therefore a child of Bourbon in the same sense as Caturra or Pacas, but its defining trait has nothing to do with plant size.

The buying rule is simple. A bag marked Bourbon means the parent stock or one of its colour forms; a bag marked Bourbon Pointu or Laurina means something else, and the stated caffeine level is the quickest way to check.

Bourbon did not leave the plantations because it cupped badly. It left because its own mutations, shorter in the row and denser per hectare, proved more profitable on the same land.

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Does processing blur the line between Bourbon and the varieties bred from it?

It can, and that is worth knowing before you attribute a cup difference to genetics. Bourbon's genetic expression is consistent across growing regions, the characteristic sweetness, the classic cup balance, but the processing method applied after harvest can move a cup far enough that a heavily fermented Caturra will read sweeter than a restrained Bourbon from the same district. Variety sets the ceiling; processing decides how much of it you hear.

Washed Bourbon, where the cherry skin and mucilage are mechanically removed and the bean is fermented briefly before being dried on raised beds, expresses Bourbon's terroir most directly. The sweetness is present but restrained: a clean sucrose sweetness rather than a fruited or jammy one. The acidity is the featured element, typically malic (think green apple) or citric depending on altitude and regional soil chemistry. A washed Red Bourbon from Rwanda's Nyungwe highlands will taste substantially different from a washed Yellow Bourbon from Brazil's Sul de Minas, even though they share the same variety, the terroir signal comes through clearly in washed processing precisely because the fruit's fermentation contribution is minimised.

Natural Bourbon, dried whole with the cherry intact for 15-25 days, adds a layer of fruit-derived compounds that fundamentally shifts the sensory profile. The sugars from the drying cherry migrate into the bean, enriching body and adding notes of dried fruit, stone fruit, and in some cases an almost wine-like fermentation character. Natural Bourbon from El Salvador or from Brazil's Cerrado can exhibit a complexity that surprises tasters accustomed to thinking of Bourbon as a "traditional" and therefore restrained variety. The natural process doesn't eliminate Bourbon's classic balance, it amplifies certain registers while keeping the underlying sweetness prominent.

Honey process Bourbon, intermediate between washed and natural, with the mucilage left on during drying, occupies a nuanced middle position. The degree of mucilage retained (white, yellow, red, or black honey, referring to decreasing levels of removal) creates a gradient of fruit contribution. A red honey Bourbon from Costa Rica's Tarrazú region will show a bright sweetness and moderate fruit character without the fermentation intensity of a full natural, a profile that pairs beautifully with its naturally high acidity and gives roasters a versatile material for both espresso and filter applications.

Which named Bourbons are genuine Bourbons, and which only borrow the name?

The word Bourbon does a lot of commercial work on bags, and not all of it is backed by genetics. Three tiers are worth separating.

First, the genuine forms of the variety itself. Red Bourbon is the archetype. Bourbon Amarelo, the yellow form documented in São Paulo state, is either a colour mutation of the red form or a recombinant from natural crossing, and it remains firmly inside the lineage. Tekisic, selected in El Salvador and catalogued as an improved Bourbon, is a selection within the lineage rather than a different thing.

Second, the true descendants that no longer carry the name. Caturra, Pacas and Villa Sarchi are dwarf mutations of Bourbon; Mundo Novo is a Bourbon and Typica hybrid; Catuai descends from both. These are the varieties that actually inherited the parent stock, and none of them says Bourbon on the label.

Third, the names that borrow without descending. Pink Bourbon, sold out of Huila and Cauca in Colombia, has been genetically tested more than once and does not sit in the Bourbon lineage; the material appears to be of Ethiopian origin. Orange Bourbon lots exist in trade out of El Salvador and Colombia but have no entry in the reference variety catalogues. And SL34, whose French Mission origin story implies Réunion seed, tests into the Typica group. The practical lesson is that a Bourbon claim is worth exactly as much as the traceability behind it.

What should a roaster expect from Bourbon compared with Caturra or Catuai?

Mostly a different raw material to control, and the difference tracks the family tree. A tall Bourbon carrying an average cherry-to-green outturn and ripening early in the season delivers a lot that behaves differently from a compact Caturra picked from a dense block later in the harvest, even when the two farms sit side by side.

Because Bourbon's sweetness sits high, the Maillard and caramelisation phases move fast. A roaster who is not watching the bean temperature curve closely can tip into darker territory before the aromatic complexity has developed. Light to medium-light roasting, stopping shortly after first crack in most cases, is the approach that preserves the balance while letting the sugars develop.

The reward is a coffee that reads as a reference point. Bourbon's balance, the sweetness, the moderate acidity, the clean body, is what its descendants are measured against, which is exactly why so many houses keep a Bourbon or a Bourbon descendant as their standing espresso. Working through a Bourbon and a Caturra from the same origin, side by side and on the same profile, is the cheapest way to hear what a single dwarfing mutation did to the cup.