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[自然百科] 2014-11-08 啤酒是如何酿成的—11

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[Homework]2014-11-08 啤酒是如何酿成的—11

And Dr. Bamforth would know. He runs one of only two brewing programs in the U.S. at the University of California at Davis, where students can actually earn a master's degree in the art of brewing.-Science is incredibly important in the brewing beer, particularly in trying to strive to create a consistent product.
Every aspect of beer is studied, from the colour to the taste, right down to the consistency of the foam.
And why are they so interested in foam? Technically, it doesn't change or even add to the flavor of beer, but it doesn't seem to matter, because in the world of beer, good foam is good business.
-Currently, I work on beer foam. So I look at what kills a good beer foam, how to make a good foam more stable. The machine that we use to test it basically turns the beer all into foam and measures the rate of collapse of that foam.
Foam forms because the disolved carbon dioxide gas that occurs as a result of fermentation process.
-Foam is kind of complicated, depends on how we pout it and then how stable it is, and depends on how long you leave it. Because if you take a lot of sips, then the foam texture will change. It will lace the side of beer glass and so on. To me, you pour that beer in a glass. You want foam. You haven't even tasted it, you haven't even smell it yet, but you're looking at it. First impressions are everything.

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