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The Non-Alc Cold Side — Yeast Selection & Fermentation

This part covers the "engine" of NA brewing, which has shifted significantly with the availability of new yeast strains.

Format
Deep Dive
Published
December 9, 2025

The Core Concept: Maltose-Negative Yeast. Move the reader away from the difficult "arrested fermentation" method (stopping fermentation mid-way) and toward modern biological methods.

Specialized Strains: Detail strains like Saccharomycodes ludwigii (or commercial equivalents like Fermentis SafBrew LA-01 or Lallemand LalBrew LoNa) that only ferment simple sugars (glucose/sucrose) and leave maltose untouched.

Process Control: Discuss fermentation kinetics—these fermentations are rapid and produce very little CO2. Explain how to manage the "off-flavors" (often worty or sweet) that can persist because vigorous fermentation doesn't scrub them out.

About Jamie Bogner:

Jamie Bogner is the cofounder and editorial director of Craft Beer & Brewing Magazine®. Email him at jbogner@beerandbrewing.com.

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