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[自然百科] 2014-10-25 啤酒是如何酿成的—5

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Homework
    Still with so many different beers available around the world, the majority of well-known styles fall into just two categories, ales and lagers. Ales which include stouts, India pale ales, lambiks, wheat beers and porters are known to have heavier fruitier flavors, lagers which include pilsners, bocks, Schwarzbier and malt liquors are generally crispier and cleaner tasting, but it's not just the flavor that distinguishes an ale from a lager, it's the way they're fermented.
    A lager is a generic term for bottom fermented beer, okay, when you add the yeast in primary fermentation we start creating that alcohol and start creating CO2 and eventually the yeast will start settling to the bottom of the fermenter, in very simple terms that's a lager. An ale uses a different type of yeast and you start creating the alcohol and the yeast rises to the top, ales are generally fermented warmer about 15 degrees warmer than a lager so it provides a completely different flavor.
    Now your favorite brand might come light, if so you are not alone, bud light is the largest selling beer in the world, light beer is basically lager beer brewed to have lower calories, carbon hydrates and often less alcohol.
    Bud light has a truly unique brewing process, it takes probably twice as long in the brewing house to make a bud light.
    While both beers are lagers, bud and bud light are made with different proportions of grains and hops, the grains for bud light are cooked for a longer amount of time and at lower temperatures.
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