Producers

Colombia's first koji farm

How the Bayter family turned a failed avocado farm in Tolima into a fermentation frontier — and grew the rare Papayo lot behind our Reserve.
2 min read
Aerial view of El Vergel Estate in Fresno, Tolima — blue-roofed processing sheds surrounded by forest and coffee plots

Most coffee farms grow coffee. El Vergel, in Fresno, Tolima, grows a question: what happens when you treat fermentation like a laboratory instead of a tradition?

The Bayter family didn't start in coffee at all. In 1995 they planted avocados and built El Vergel into one of the most productive farms in Colombia — until 2006, when disease and a price collapse wiped out the crop. It was Martha Bayter who decided to replant in coffee, starting with Catimor and red and yellow Caturra, “pushing well past the limits of what she knew at the time.”

The farmhouse at El Vergel Estate, Fresno, Tolima, Colombia The Bayter family of El Vergel Estate — Elias, Shady and Martha Bayter
The farm, and the family who changed what it grew. Martha replanted El Vergel in coffee after the avocados failed; her sons Elías and Shady run the fermentation programme it is now known for.

What came next is why we buy from them. Instead of settling into one house style, the family taught themselves pulping and fermentation, brought in specialists, and planted a library of exotic varieties — Geisha, Java, Pacamara, Red Bourbon, Laurina. By 2018 they were running aerobic and anaerobic ferments and had built silos for controlled storage. Today more than 28 varieties grow across the estate, and the farm runs its own research into the yeasts and bacteria that drive fermentation.

El Vergel is recognized as the first farm in Colombia to develop the koji process — the fermentation technique behind miso, sake and soy.

Koji-process green coffee drying at El Vergel Estate, Colombia's first koji farm

We never make a claim we can't name the variable for.

Koji-process green coffee on the drying bed. Koji is a cultivated mould — Aspergillus oryzae — that breaks starch into sugar; Japan has used it for centuries in miso, sake and soy. El Vergel was the first farm in Colombia to bring it to coffee.

That's our first rule, and control is the whole idea. El Vergel is what it looks like at origin: a farm that can tell you the temperature, the hours, the microbe.

Sealed blue fermentation drums fitted with airlocks at El Vergel Estate
Sealed drums under airlocks. The airlock lets carbon dioxide escape without letting oxygen back in — which is the whole trick. This is what anaerobic fermentation actually looks like: unglamorous, and timed to the hour.

Our Papayo Jungle comes from here — a rare variety, grown and processed on the estate, with a four-hour open-air start and ninety-six hours sealed under a held humidity of 22–25%. Forest, our importer partner, files it in their own “Reserve” category. So do we.

Coffee cherries drying in labelled lots on shaded raised beds at El Vergel Estate
Every parcel dries under its own label. With 28 varieties and several ferments running at once, the labels are the difference between a research programme and a mess.

The strawberry, mango and pomegranate you taste in that cup aren't luck. They're the output of a farm that decided, after losing everything to avocados, to control the one thing it could: the ferment.

The lot

Colombia Papayo Jungle · 96h Anaerobic Natural — grown and processed at El Vergel Estate. Strawberry, mango, pomegranate.