| http://www.w3.org/ns/prov#value | - But ales, lagers and just about all the modern styles of beer share the same yeast. ???Thousands of years ago, long before humankind had any idea that such a thing as yeast existed, the original brewers relied on spontaneous fermentation,??? Shelton says, ???fermentation sparked by wild yeasts floating on the open air.??? Only in Belgium did brewers after the 19th century keep up this old???and sl
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