Castillo Coffee: Colombia's Rust-Resistant Workhorse
Key takeaways
Castillo is a rust-resistant variety bred by Colombia's coffee research centre, Cenicafé, from Caturra and the Timor Hybrid, and released in 2005.
It is everywhere: 809 Castillo lots are in stock from 400 roasters, more than Geisha, and 96% of them are Colombian.
Blind cupping found no significant score gap between Castillo and Caturra grown side by side, and our catalogue shows the two carrying near-identical notes.
Castillo is the quiet base of Colombian decaf and co-ferments: 31% of Castillo lots are decaf, and one in five co-fermented coffees in stock lists it.
Questions this article answers
What is Castillo coffee?
Is Castillo coffee good?
What is the difference between Castillo and Caturra?
Does Castillo have Robusta in it?
What does Castillo coffee taste like?
Why is so much decaf coffee Castillo?
For about fifteen years, 'Castillo' on a coffee bag was a quiet apology. It was the variety that saved Colombia's farms from leaf rust, and the specialty world was fairly sure it had ruined the cup in the process.
That story has not aged well. There are 809 Castillo coffees in stock on Cuppd right now, from 400 roasters — more than Geisha. So here is what Castillo actually is, why Colombia planted billions of it, what happened when people tested the 'worse than Caturra' claim blind, and why it keeps turning up in the strangest coffees on the shelf.
Washed Castillo — caramel, orange, red fruit
What is Castillo coffee?
Castillo is a rust-resistant Arabica variety bred by Cenicafé, Colombia's national coffee research centre, from a cross between Caturra and the Timor Hybrid. Colombia's coffee growers' federation released it in May 2005, and it is named after Jaime Castillo Zapata, the Cenicafé breeder behind its predecessor.
Timor Hybrid: a natural cross between Arabica and Robusta that turned up on the island of Timor. Breeders use it as a donor of leaf-rust resistance, then select the offspring back towards Arabica flavour.
Castillo was not Colombia's first go. The research programme behind it started in 1968, and its first product, Variedad Colombia, came out in 1982 — a year before leaf rust actually reached the country. Castillo came from the same line after another 23 years and five generations of selection, aiming for Caturra's short, dense-planting tree plus durable rust resistance.
It is also not one plant. Cenicafé released Castillo as a composite: a mix of related lines rather than a single uniform one, plus regional versions bred for different parts of the country. The idea is durability: a new rust strain that beats one line has a harder time beating all of them.
Why did Colombia replant with Castillo?
Because leaf rust was wiping out the variety it replaced. According to World Coffee Research, Caturra was thought to account for nearly half of Colombia's production until a government-backed programme starting in 2008 paid farmers to renovate more than three billion coffee trees with Castillo. Our Colombia guide covers what that did to the country's coffee and the argument that followed; the short version is that it worked as farming.
It shows on the shelf. Of the 3,062 Colombian coffees in stock on Cuppd, 777 list Castillo — one in four. That is a floor, not a ceiling: a lot of Colombian bags just say 'Colombia' or 'Caturra, Castillo, Colombia' because the cherries from several varieties are picked and processed together. Exactly that happens here: 641 of the 809 Castillo lots list at least one other variety, most often Caturra (547 lots) or Variedad Colombia (376).
Does Castillo taste worse than Caturra?
Not in the test that mattered. In 2014, World Coffee Research and Catholic Relief Services collected Castillo and Caturra from the same farms in Nariño, Colombia, processed them identically and had professional cuppers score them blind. Across 22 farm pairs there was no statistically significant difference in overall score. A trained sensory panel at Kansas State University could tell the two apart — they taste different — but neither was better, and soil, shade and harvest practice tracked the scores more closely than variety did. For the other side of the comparison, see our Caturra guide.
Roasters' own bags say much the same. Take only the pure, single-variety, non-decaf Colombian lots in stock: 127 Castillo and 164 Caturra. Caramel appears on 19% of the Castillo and 20% of the Caturra. Strawberry: 10% for both. Chocolate is the one real gap, 17% of Castillo against 13% of Caturra. And 36% of the Castillo and 32% of the Caturra go through fermentation-led processing — so the varieties are not even being treated very differently.
Fun fact
Castillo is a registered name — Colombia's coffee federation writes it Castillo® — and its regional versions carry place names such as El Rosario, Naranjal and La Trinidad, after the parts of the country they were selected for.
What does Castillo coffee taste like?
Like classic Colombian coffee, because for most bags it is classic Colombian coffee. Across all 809 lots, chocolate leads at 24%, caramel at 23%, then milk chocolate (13%), dark chocolate (10%), and orange and brown sugar (8% each). Roasters used 191 different notes for it, which is a wide spread for a 'workhorse'.
Washed Castillo, 549 lots and two-thirds of the shelf, is the caramel-and-chocolate one: caramel on 26% of washed lots, chocolate on 26%, orange and dark chocolate on 10% each. Natural Castillo (152 lots) goes darker and fruitier: dark chocolate on 18% and strawberry on 12%. The anaerobic lots (44) are where it stops tasting like a 'safe' variety at all — lychee on 23%, strawberry and peach on 14% each.
Regionally it follows Colombia's map: Huila is tagged on 244 lots, Cauca on 117, Tolima on 62 and Nariño on 59. Outside Colombia Castillo is rare — 32 lots, only 20 of them single-origin, from places like Bolivia, Mexico and Venezuela.
Why is Castillo in so many decaf and co-fermented coffees?
Because it is what Colombia grows most of, and both of Colombia's specialty sidelines start with whatever is in the field. Decaf first: 250 of the 809 Castillo lots in stock are decaffeinated — 31% — and 215 of those use the sugarcane method. That is Colombia's house style: 421 of the 549 single-origin Colombian decafs in stock are sugarcane-processed.
Sugarcane decaf (ethyl acetate, or EA): the green beans are washed in a solvent made from fermented sugarcane, which carries the caffeine out. It tends to leave a sweet, slightly fruity cup.
Castillo decaf — mostly sugarcane process
Then the other end of the shelf. Of the 139 co-fermented coffees in stock across the whole catalogue, 27 list Castillo — one in five. Two Colombian producers dominate: 19 Castillo lots in stock carry Jairo Arcila's name, and 16 carry a Bermúdez of Cauca, half of them from Finca El Paraíso. These are the lychee, rum, watermelon and 'Turkish delight' coffees, and they are Castillo underneath. If you want the background on the process, our anaerobic coffee guide explains it.
Co-fermentation: the coffee ferments alongside added fruit, yeast or other ingredients, which push their own flavours into the bean. It is why a bag can honestly say 'lychee' when no lychee grows on the farm.
Experimental Castillo — lychee, rum, watermelon
Which roasters sell the most Castillo?
Castillo is spread very thin. Of the 400 roasters selling it, 210 carry exactly one — half of them — and only 31 carry five or more. The top two hold just 26 lots, 3% of the shelf. It is in everybody's Colombian, nobody's specialism.
The raw top of that list also needs an asterisk. Three roasters tie on 13. Paloma's are one Huila coffee in five formats, four blends and a handful of single lots. Equator Coffees' are mostly blends, espressos or decafs with Castillo as one part; only two are single lots. Olisipo's include four decafs, and none has full product details yet. Portrait, next with eight, sells four coffees in two formats each. So the cards below go to the next three: roasters with deep lists of single-origin Castillo that tell you the farm.
Sample Coffee's ten are all washed and all Colombian (one shares the bag with an Ethiopian), mostly from Nariño and Huila, which makes it the cleanest way to taste the variety without a process on top. Five Senses has nine across three countries, including a Guatemalan and a Tanzanian lot. Quimbaya Cafe's six are all Colombian and all named after their producers, from Baudilio Castillo in Popayán to Teresa Burbano de Torres's natural microlot from Buesaco, sold as both filter and espresso.
Castillo is the variety specialty coffee spent a decade apologising for, and then quietly built a quarter of its Colombian shelf on. Buy a washed single-farm one next to a Caturra and see if you can find the famous gap. Browse all 809 Castillo coffees in stock, and rate what you try on Cuppd so the next person knows which ones earn it.
How did we count 809 Castillo coffees?
Every number on this page is a count from the Cuppd catalogue, not an estimate or a survey. Specifically:
- Source: the product listings on 940 specialty roasters' own online shops, not marketplaces or resellers. A coffee counts once per roaster listing, which is why a shop selling one coffee in several bag formats counts several times.
- In stock: every coffee is re-checked against the roaster's shop once a month. All 809 Castillo lots here were confirmed available on 2 October 2026.
- Variety: as the roaster labels it. Castillo's regional versions are counted as Castillo; Variedad Colombia and Cenicafé 1 are separate varieties and are not in these figures.
- What counts as a Castillo: any coffee whose roaster lists Castillo among its varieties. 168 of the 809 are pure Castillo; 641 list other varieties too, 95 combine several origins, 50 are named as blends and 250 are decaf. The Castillo-versus-Caturra comparison uses only pure, single-variety, non-decaf Colombian lots.
- Tasting notes: the roaster's own notes, mapped onto a shared vocabulary of 330 notes so that spelling variants and near-synonyms count as one note. A lot can list several notes, so shares do not add up to 100%.
- Not ranked: nothing here is scored or sponsored. The roasters above are chosen by how many single-origin Castillo lots they stock, nothing else.
Castillo on the price index
October 2026€59 per kg at the median, +3% vs all coffees. Half of Castillo coffees cost between €51 and €72/kg, across 717 coffees from 385 roasters.
See the Cuppd Specialty Coffee Price Index →