You've done the research. You know cassava flour is naturally gluten-free. You've read it on a dozen sites. But you've also been burned before. A flour that tested clean on the label still made you sick. So before you open a new bag, you want to know something the "naturally gluten-free" label doesn't tell you: where was this processed, and what else was in that building?

That's the right question. This post answers it.

The question a "naturally gluten-free" label doesn't answer

Cassava is a starchy root vegetable. It doesn't grow gluten proteins. Full stop. The two proteins that define gluten in wheat, gliadin and glutenin, are specific to grass-family grains: wheat, barley, and rye. Cassava isn't a grain. It's a tuber. Peer-reviewed research on celiac disease and dietary compliance consistently lists cassava among the crops that are inherently free of these proteins.

So the ingredient is safe. Every bag of pure cassava flour starts from a gluten-free crop.

What happens between the soil and your kitchen is where the conversation gets harder. Cassava flour picked up, shipped, and milled in a facility that also runs wheat, barley, or oat flour through the same equipment is a different product from cassava flour processed where no other grain has ever been on the floor. Both bags say "naturally gluten-free." The label doesn't tell you which situation you're in.

For a celiac buyer, that gap is the actual risk. Research on gluten cross-contact risk in food handling documents that naturally gluten-free products commonly pick up contamination at harvesting, transport, storage, or milling when those environments are shared with gluten-containing crops. The ingredient is clean. The chain behind it may not be.

Mention of Cameroon comes naturally here: we grow our cassava in Cameroon, and the country of origin matters because what surrounds the crop on that farm matters. More on that below.

What FDA's gluten-free labeling rule actually certifies

The FDA's gluten-free labeling rule sets a threshold of fewer than 20 parts per million (ppm) of gluten. Any food carrying the words "gluten-free," "free of gluten," "no gluten," or "without gluten" must comply with that standard.

What this means for a celiac buyer: a product can legally carry a "gluten-free" claim without a third-party audit of the facility. The brand is responsible for ensuring compliance, but the rule doesn't require independent certification. It requires that the product, as sold, tests below 20 ppm.

The gap between those two things is real.

A product can also be labeled "gluten-free" with no third-party certification if the manufacturer trusts its own process controls to stay below the threshold. That's allowed under the FDA rule. For a celiac buyer with a history of reactions to trace amounts, knowing which of these three situations you're in (certified, single-crop, or brand-attested) changes the risk profile.

The standard for certification programs run by organizations like the Beyond Celiac organization goes further than the FDA floor: third-party audits, facility inspections, and documented cleaning protocols.

Cross-contact: how it happens and what stops it

Cross-contact (the term clinicians prefer over "cross-contamination" for this context) happens when a gluten-free product encounters gluten during manufacturing. The common routes are shared milling equipment, shared storage bins, airborne flour particles that settle on exposed cassava flour, and shared staff who handle gluten-containing materials without changing gear.

Airborne gluten flour is a specific hazard. Wheat flour is fine-milled and can stay suspended in facility air for hours. A bag of cassava flour milled immediately after a wheat run in the same space can pick up gluten from the air, not just from direct contact with the equipment.

Here are the questions worth asking any cassava flour brand before you commit to a bag:

• Does your facility process any wheat, barley, rye, or oat products?
• If yes, is the cassava flour run on dedicated equipment, or shared equipment after cleaning?
• If shared equipment, what does your cleaning protocol look like, and do you test post-cleaning?
• Do you test finished lots for gluten content? What method (ELISA, lateral flow)?
• Is the product certified gluten-free by a third-party body?

A brand that can't answer all five questions is asking you to trust the label. That's a different level of assurance from being able to trace the risk chain.

The structural answer to cross-contact is simpler: a facility that processes only cassava has no other grain to cross with. No clean protocol needed for what was never there.

We at YAKÉVA grow our cassava on JK Agrofarms' own farm in Cameroon and process it in our factory on the same site. Our factory processes only cassava. No wheat has ever run through our equipment, because we grow and process one crop. The full sourcing chain is on our sourcing page.

If you have celiac disease, consult your gastroenterologist or registered dietitian before adding any new flour to your diet.

YAKÉVA's answer to the cross-contamination question

The framing above leads to a direct answer. YAKÉVA organic cassava flour is made in a single-crop cassava-only facility. The farm grows only cassava. The factory processes only cassava. There is no wheat, no barley, no rye, no oat in the building. The absence of cross-contact isn't a cleaning protocol we maintain; it's the architecture of what we grow and process.

We hold NOP (USDA National Organic Program) and EU organic certifications through Ecocert since 2023. Organic certification audits the inputs and the process chain. It confirms no prohibited additives in processing, documents our mechanical steps, and requires an audit trail from seed to bag. That same audit chain supports confidence in what is not in the building.

We cannot call our flour "certified gluten-free" because we haven't pursued a gluten-specific third-party certification. What we can say with precision: our facility has never processed a gluten-containing grain. That's not a test result. It's a structural fact.

For a celiac buyer who has had reactions to trace gluten from a shared facility, that distinction matters. A single-crop facility answers the facility question before the testing question.

For baking guidance on using cassava flour as a wheat replacement, our complete cassava flour guide covers ratios, texture, and moisture adjustments in detail. If your interest in cassava flour is also about following an AIP protocol, our post on cassava flour and the AIP diet addresses cyanogenic glycosides and the processing steps that matter. And if the glycemic index question is on your mind alongside celiac management, see our piece on cassava flour and glycemic index.

You can find YAKÉVA organic cassava flour on our product page.

Frequently asked questions about cassava flour and celiac disease

Is cassava flour safe for people with celiac disease?
Cassava itself contains no gluten proteins. It is inherently safe at the ingredient level. The celiac risk comes from processing: a flour milled in a shared facility can pick up trace gluten from equipment or airborne flour particles. Cassava flour from a single-crop, cassava-only facility carries no cross-contact risk from manufacturing.

Does "naturally gluten-free" on a cassava flour label mean it's safe for celiac disease?
Not automatically. "Naturally gluten-free" describes the ingredient, not the facility. A product with that label may still have been processed in a building that handles wheat. If the product isn't certified gluten-free or made in a single-crop facility, the label alone doesn't answer the facility question.

What is the FDA's standard for gluten-free labeling?
The FDA requires that any food labeled "gluten-free" contain fewer than 20 ppm of gluten. This standard applies whether or not the product has third-party certification. The rule allows manufacturers to self-attest compliance; third-party certification is not legally required.

What does a single-crop facility mean for celiac buyers?
A single-crop facility processes only one crop type. In YAKÉVA's case, only cassava enters the farm and only cassava runs through the factory. This eliminates the source of gluten cross-contact: there is no wheat, barley, or rye present at any stage. It's a structural guarantee rather than a testing-based one.

By the Yakéva Team · Last updated: June 16, 2026