Skip to main content

Malthouses That Run Gluten-Free

This is not a list of malthouses you can trust. It is a method for verifying one yourself, with two worked examples. The difference matters: a list rots quietly, and someone with celiac disease gets hurt trusting a page that was accurate two years ago.

Grouse Malt House — Wellington, Colorado. Millet, buckwheat and rice malts. States it produces gluten-free specialty malts exclusively. [email protected] · (970) 568-9001

Eckert Malting & Brewing — Chico, California. Custom gluten-free malting and roasting, plus their own brewery. States a dedicated gluten-free facility. [email protected] · (530) 342-2320 · Rice malts · Contact

Testing Without an In-House Lab — Where to get incoming malt tested yourself, which is step 5 below and the one people skip.

Tier: Verified — we read what they publish, we did not audit them · Verified 4 August 2026 · Re-check every 3 months

Correction to an earlier lead: an internal note listed Grouse at grousemalting.com. The correct domain is grousemalthouse.com.

Why this page is shaped this way​

A page that says "these malthouses do gluten-free" is a safety claim about a third party that we cannot continuously verify. A malthouse changes hands, adds a barley line, or lets its testing regime lapse — and the page keeps vouching for it. If someone is harmed after trusting the list, the page is the reason they trusted it.

So the shape here is verification-first. What follows is what "runs gluten-free" has to mean, how to confirm it, and what a credible answer sounds like. The two named malthouses are examples to run the method against — never a substitute for running it.

Our experience​

Tier: Verified — and note exactly what that means here.

We have not toured these facilities, audited them, or tested their product. Verified means: on the date shown, we read what each malthouse publishes about its own gluten-free handling, and this page reports what they say, with links so you can read it yourself.

That is a documentation check. Yours needs to be a supplier qualification. The next section is how.

What "gluten-free capable" has to mean​

Four things. A malthouse that cannot answer all four has not established the capability, however confident the sales conversation sounds.

1. Dedicated facility, or dedicated line?​

Very different risk positions, routinely blurred.

Dedicated facility — no gluten grain enters the building. Nothing to change over, nothing to validate, no shared dust. Strongest position, rarest.

Dedicated line — gluten grain is in the building but your grain runs on equipment that never touches it. Now you need to know what "never" covers: steep vessels, germination beds, kiln, augers, elevators, conveyors, dust collection, and storage. Grain handling is dusty and shared pneumatics move that dust — transfer equipment is where cross-contact usually lives, not the vessels people ask about.

Shared equipment with cleandown — weakest, and still acceptable if and only if the changeover is documented, validated by testing, and recorded per lot. "We clean thoroughly between runs" is not a validated changeover. See Dedicated Equipment and Facilities and Cross-Contact Prevention.

2. Testing method and threshold​

Three separate questions, because each answer can be fine alone and still not add up:

  • Which assay? Malt is pre-fermentation, so a sandwich R5 ELISA reads it properly — unlike finished beer, where fermentation defeats the measurement. See Gluten Testing Methods and Their Limits.
  • What threshold? Below 20 ppm is the FDA labeling line. Certification programs and some labs work stricter. A malthouse saying "gluten-free" without a number has not answered.
  • How often? Every lot, or periodically? Periodic testing tells you about the facility. Per-lot testing tells you about your malt. Only one of those goes in your batch record.

3. Lot documentation​

Per delivery: lot identity, the result for that lot, the method, the date. Will they retain a sample?

A facility-level certificate is a statement about the malthouse, not evidence about your malt. Your claim needs the second. See Lot Identity and Traceability.

4. Willingness​

A malthouse handling gluten-free grain seriously will not find any of this unusual and will have documents ready. Reluctance to share an SOP or a result is itself a finding — not proof of a problem, but a reason to keep asking.

How to run the verification​

  1. Read what they publish, and note when it was last updated.
  2. Ask the four questions above in writing. Keep the reply.
  3. Ask for a recent lot COA and the method behind it.
  4. Ask what changed in the last year — new lines, new grains, new ownership.
  5. Test the first delivery yourself before it goes near production. Testing Without an In-House Lab covers how, without owning a lab.
  6. Re-verify on a schedule. Quarterly is reasonable for a malt supplier; annually is not.

Step 5 is the one people skip. A supplier's documentation qualifies them. Your own incoming test qualifies the lot.

The two, in detail​

Grouse Malt House​

Malts millet (their primary line), buckwheat, and more recently rice. Their own framing: "We are the leading company to exclusively produce gluten free specialty malts for the brewing industry."

The word doing the work is exclusively — that is a dedicated-facility claim, the strongest of the four positions above. Confirm it directly and ask what "exclusively" covers.

What is not published: testing method, ppm threshold, certification, or lot documentation practice. None of it appears on their site, which makes all four questions for your first email rather than facts you can rely on.

Eckert Malting & Brewing​

Custom malting and roasting of gluten-free grains plus their own brewery. Rice malt is the specialism. Their own words: "We specialize in the custom malting and roasting of gluten-free grains, with a dedicated gluten-free facility that guarantees protection against cross-contamination."

Again a dedicated-facility claim, and again the supporting detail is not public — no testing method, threshold, or certification. "Guarantees" is a strong word; ask what backs it.

Both are the starting point of a verification, not the end of one. Neither has been audited by us, and neither publishes the evidence that would let anyone audit them from outside.

Verified as of 4 August 2026 — read each company's public site and quoted their gluten-free statements verbatim; confirmed both appear to be operating. We did not verify testing methods, thresholds, certifications, or facility arrangements — none are published, and we have not contacted either company.

Gluten Free Brewer has no commercial relationship with the organizations on this page and receives nothing for listing them. If that ever changes, it will be disclosed here.