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Gluten Free Mexican Lager — Grain to Glass

The Underground Brewery · May 25, 2025 · 17:05 · Watch on YouTube ↗

Two beers for the price of one. This video takes the house Mexican lager recipe — a proven favorite — and attempts to clone it with 100% gluten-free ingredients: Grouse pale millet malt, flaked corn, and Ondea Pro and Ceremix Clex enzymes doing the conversion work through a rising step mash. Along the way there's a useful bit of labeling law: in the United States a beer made with barley can never be labeled gluten-free, even when treated with Clarity Ferm — it has to be brewed from actually gluten-free ingredients.

The side-by-side tasting at the end delivers the twist: the gluten-free version wins. More balanced, better hop expression, and good enough that it might permanently retire the original barley-based recipe. Both full recipes — grain bills, water salts, step mash temperatures, and hop schedule — are in the video description.

If millet malt and brewing enzymes are new territory, this is the best starting point on the channel — the process is shown end to end.