Topic: Brewing Science

Yeast Metabolism

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How yeast ferment sugar and produce flavor and aroma compounds.

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Yeast Biology

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How did Saccharomyces cerevisiae become a good brewing yeast?

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Hop Polyphenols

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What are hop polyphenols, and how do they affect bitterness in dry hopped beers?

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Buffers and Brewing

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What is a buffer and why should advanced homebrewers learn about them? Put on your chemistry cap and sit back while we attempt to take the bafflement out of buffers.


Yeast Pitching Rates

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Yeast do not want to make beer. They want to grow. The yeast do not care what kind of beer you want to make. They simply take stock of the food resources,

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Understanding the Science behind Beer Foam

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Beer foam: it’s more than just a layer at the top of your glass. Explore the science of the suds.

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Behind the IBU

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What is an IBU? It’s a simple question — wait until you hear the answer.

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The Science of Step Mashing

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A single infusion mash is best for fully-modified malts — but when it comes to undermodified malts, you need to step it up.


Can oats in homebrew lower my cholestrol?

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  I’ve been writing this column for 12 years now and am always surprised by the creativity of homebrewers, especially when it comes to redefining the daily role of beer in one’s

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How does silicone affect beer foam?

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  The professor you are working for is correct to state that some brewers use anti-foams and it is also true that these compounds are silicon-based. Dimethylpolysiloxane, in the form of a

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How does tyramine in beer affect people taking MAOI?

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  I have answered many questions over the years that deal with medical and health topics. The way I go about answering these questions is reading what I can find about these


The Principles of pH

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What (exactly) is pH and what can – or should – a homebrewer do about it? You may not know much about it (and depending on your water and the beers you brew, you may not need to), but pH affects many major aspects of beer character. Learn the simple steps to manage pH in your homebrews.


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