Beer is made out of water, malt, hops (the flowers of the Humulus lupus plant), and brewing yeast of the strain Saccharomyces cerevisiae. It owes its marvelous flavor to a great deal of chemistry. This video explains how beer is made.
How To Make Beer
The video is based on the article The Oktoberfest Rearrangement by Klaus Roth,
ChemViews Mag.
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