Beer is fermented (usually) by one of two closely related species of yeast. In this quick bonus episode, we look at what how beer fermentation works, the differences between ale and lager, and how yeast and fermentation impact beer flavor. Enjoy this quick primer on beer fermentation!

Check out David's book Pairing Beer & Chocolate: A Guide to Bringing the Flavors of Craft Beer and Craft Chocolate Together.

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