We believe you deserve to know exactly what's in your cup. That's why every lot we source goes through third-party laboratory testing before it reaches you. This month, we're sharing the full results for our Arabica Yellow Catuaí from Fazenda Santana in Serra Negra, São Paulo — and the news is as clean as the coffee tastes.

Testing was conducted by Cambium Analytica, an ISO/IEC 17025:2017 accredited lab based in Traverse City, Michigan. The certificate covers four panels: aflatoxins, two rounds of pesticide screening, and yeast & mold. Here's what they found.

Why Aflatoxins Matter

Aflatoxins are naturally occurring mold toxins produced by Aspergillus fungi. They're a real and well-documented concern in agricultural commodities — including coffee — particularly in regions with high humidity or inadequate post-harvest drying. Ochratoxin A, another mycotoxin included in our panel, has been found in coffee grown and processed under sub-optimal conditions worldwide.

The World Health Organization classifies Aflatoxin B1 as a Group 1 carcinogen. That's not a fact designed to alarm — it's the reason we test.

Pesticide-Free Across 80+ Compounds

Our pesticide screening used two complementary analytical methods — Gas Chromatography (GC/TQ) and Liquid Chromatography (LC/TQ) — each targeting different classes of compounds. Together they cover organochlorines, organophosphates, pyrethroids, fungicides, and more.

Every single analyte returned Not Detected. Every calculated total — DDTs, Endosulfans, Chlordanes, Pyrethrins — reads 0.000 µg/g. All passing their respective action limits with substantial margin.

"Zero pesticide residues detected across more than eighty compounds. For a coffee grown in Brazil, one of the world's largest coffee-producing nations, that's a result worth celebrating."

About the Yeast & Mold Results

This panel returned actual numeric values — 300 CFU/g mold and 5,000 CFU/g yeast, for a combined 5,300 CFU/g — which we want to address directly.

What This Means for You

When we source a coffee, we're making a promise — not just about how it tastes, but about what it contains. Third-party lab testing is how we keep that promise honest. The results aren't reviewed by us; they're certified by independent scientists at an accredited facility.

The Arabica Yellow Catuaí from Fazenda Santana is grown at altitude in Serra Negra, São Paulo — a region known for its cool nights and distinct terroir. The farm's careful post-harvest practices are part of why this coffee cleans up so well in testing. Good farming and clean results aren't a coincidence.

We'll continue publishing certificates of analysis for every lot we bring in. Because transparency isn't a marketing strategy. It's just the right thing to do.