Coffee purity research without the toxin-theater fog machine.
Track what matters: heavy metals, mycotoxins, pesticide standards, decaf solvents, roast freshness, sourcing transparency, and which claims deserve the side-eye.
Lead, cadmium, arsenic, and mercury belong on the clean-coffee screening list.
Ochratoxin A and aflatoxins are the core mold-related test claims to verify.
Freshness is not purity, but stale coffee is still a quality failure.
Zero credit for “toxin free” without lab, batch, date, and numeric results.
The clean-coffee checklist turns marketing fog into yes/no buying signals.
Overview
The clean-coffee framework: test results, origin, freshness, process, taste, and value.
Contaminants
Heavy metals, mycotoxins, pesticides, and where the real risk signals come from.
Lab Testing
How COAs, detection limits, batch IDs, and third-party labs should be read.
Buyer Markers
Roast date, origin, decaf process, packaging integrity, and price per cup.
Brand Watch
The brands, testing claims, and transparency patterns worth tracking next.
Latest clean-coffee findings
Heavy Metals
Heavy metals in coffee: stop panicking, start asking for COAs
The useful clean-coffee question is not whether scary elements exist in the universe. It is whether the brand can show current batch testing for lead, cadmium, arsenic, and mercury, plus origin and roast-date transparency.
Mycotoxins
Mold-free coffee claims need lab receipts, not wellness theater
Ochratoxin A and aflatoxin testing are legitimate signals. A mold-free badge with no lab, batch, date, analytes, or numeric result is just a sticker doing cardio.
Decaf
Decaf purity starts with process disclosure
Swiss Water and CO₂ decaf are clean default signals because the process is clear. Mystery decaf is not automatically dangerous, but the lack of disclosure is a buyer red flag.
Buying Guide
The nine-question clean-coffee buying checklist
Roast date, whole bean, origin, heavy-metal testing, mycotoxin testing, pesticide standards, decaf process, packaging, and price per cup beat every vague low-toxin claim on the shelf.