How did they ferment beer?

Avoiding Explosive Fermentation and Bottle Bombs - Blackstone

Preparing Wort & Yeast for Fermentation

Yeast, Fermentation, Beer, Wine

How To Make Old-Fashioned Ginger Beer - Fermenting for Foodies

How is Beer made?

Brewing - Wikipedia

Beer Fermentation

Beer Brewing Guide: Learn all about the Fermentation Process

Fermentation: Glass or Plastic?

The Science Behind the Beer and Brewing Industry

Beer Fermentation Time Lapse

What Is Wort and Why Is It So Important for Beer Brewing?

Yeast, Fermentation, Beer, Wine