Home / Playlists / Grain to Glass

Full brew-day documentaries

Grain to Glass

Grain to Glass is where a beer gets the full documentary treatment: recipe design, brew day, fermentation, and the final pour, all in one video. These are the most complete looks at how things actually get made in the basement — the water salts, the step mashes, the gadgets, and the occasional sketch comedy that breaks out when the mash is resting.

A running theme in this series is gluten-free brewing done right. Not gluten-reduced barley beer with enzyme added — 100% gluten-free grain bills built from millet, buckwheat, quinoa, and corn, brewed to stand shoulder to shoulder with their barley-based originals. One video even puts a gluten-free build head to head against its barley-based original in a side-by-side tasting. Start with the Scottish Export if you want classic malt-forward brewing, or jump straight to the gluten-free builds to see what millet malt can really do.

Scottish Export — Grain to Glass — video thumbnail

#01 · The Underground Brewery · February 9, 2025

Scottish Export — Grain to Glass

The first-ever Grain to Glass: a proper malty Scottish Export on a 10-gallon Maris Otter grain bill that went on to take second place for Best of Show at the Wisconsin State Fair. What does a slight-roast, Maris-Otter-forward Scottish Export actually taste like? Press play.

Read the write-up →
Gluten Free Mexican Lager — Grain to Glass — video thumbnail

#02 · The Underground Brewery · May 25, 2025

Gluten Free Mexican Lager — Grain to Glass

The house Mexican lager, cloned with 100% gluten-free ingredients — millet, corn, and enzymes. Then the side-by-side twist: how close does the gluten-free version actually get? Full recipes included.

Read the write-up →
Griffin Malt — 2025 Malt Experiment #1 — video thumbnail

#03 · The Underground Brewery · December 13, 2025

Griffin Malt — 2025 Malt Experiment #1

The brew day that kicks off the 2025 malt experiment: two full pounds of Griffin gluten-free millet malt auditioning in an amber ale. It brings raisin and dark fruit nobody expected — maybe a gluten-free barley wine in our future?

Read the write-up →
Gluten Free Hefeweizen — Grain to Glass — video thumbnail

#04 · The Underground Brewery · March 1, 2026

Gluten Free Hefeweizen — Grain to Glass

A hefeweizen with no wheat — and no gluten at all. Buckwheat, millet, and quinoa take on the hardest style in gluten-free brewing, built as a retirement gift for a Milwaukee firefighter. Did the banana and clove survive the swap? Press play.

Read the write-up →