The 190-Hour Microbial Marathon - Geeking with Meris

When I looked at the processing notes for our new Caturra from Finca La Loma, COCO BLOSSOM, one number jumps off the page: 190 hours. In the specialty world, a 190-hour fermentation is usually a recipe for disaster: it’s where you typically find "over-fermented" funk and acetic (vinegary) defects (which I hate personally). But the Sánchez family is doing something technically brilliant here to prevent that. They aren't just letting it sit, instead they are managing a precision bio-reactor.

The Lactic vs. Alcoholic Synergy

The real "geek" factor is the inoculation of both Lactobacillus and Saccharomyces cerevisiae. Here is how I see the chemistry breaking down:

• Lactobacillus (The Texture Builder): This bacteria converts sugars into lactic acid. Unlike the sharp, volatile acidity of acetic acid, lactic acid provides that heavy, creamy, yogurt-like mouthfeel that makes this coffee feel so unique.  It reminded me instantly of coconut milk!
• S. cerevisiae (The Aromatic Engine): This yeast is the workhorse of the wine world. It’s responsible for creating the complex esters (floral and fruity aromas) that give this Caturra its complex profile.

The "Brix-Matching" Secret

The reason they can push this for 8 days without the coffee "dying" is because they match the Brix levels (sugar content) of the mother culture to the original Brix of the coffee.

If the sugar concentration is too different, the microbes suffer from osmotic shock—they basically shrivel up and stop working. By balancing the sugars, they keep the microbes in a "steady state" for nearly 200 hours. It allows for a deep, structural sweetness that you simply cannot get in a standard 24-hour wash.

My Take: This isn’t a "wild" ferment; it’s a curated bio-ecosystem. We’re witnessing a shift from traditional agriculture toward intentional flavor architecture.

I’ll be honest: on the cupping table, this coffee was a total disruptor. While the processing slightly overshadows the traditional Huila terroir we usually look for, the Sánchez family executed this so flawlessly that we couldn't pass it up. It’s a bold, technical achievement that deserves a spot in your hopper.