Tiny Bits of Hay Help Create the Holes in Swiss Cheese

Swiss dairy scientists solved a century-old mystery: microscopic hay dust falling into milk buckets triggers the iconic holes in Emmental cheese.

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Why / How?

As modern milking became ultra-clean and sealed, cheese holes started disappearing! Researchers proved tiny hay specks act as nucleation sites where fermentation gas gathers into round eyes.

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Quick Guess: What happened to Swiss cheese holes as modern milking became hermetically sealed?

Verified Answer: The holes shrank and nearly vanished without hay specks

Quiz Question: What happened to Swiss cheese holes as modern milking became hermetically sealed?

Correct Answer: The holes shrank and nearly vanished without hay specks

Without microscopic hay particles to seed gas bubbles, fewer eyes formed in the cheese.

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What happened to Swiss cheese holes as modern milking became hermetically sealed?

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