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Why Does Swiss Cheese Have Holes?

posted: 05/29/15
by: Discovery.com Staff
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After a century of speculation, scientists have finally figured out why Swiss cheese is adorned with its signature holes (and, no, contrary to popular belief, there are no mischievous mice involved).

A new report from Swiss research institution Agroscope fingers small bits of hay as the culprit. However, as modern technology has vastly improved the sanitation behind cheesemaking, the amount of hay finding its way into milk has decreased. As such, the size and amount of holes in cheese has also gone down over the past two decades.

"It's the disappearance of the traditional bucket" that is making a difference, according to Agroscope spokesman Regis Nyffeler.

A 1917 study published by William Clark originally attributed the holes to carbon dioxide released by bacteria in milk.

Click here to learn more from The Telegraph

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