Most blocks of Swiss cheese are dotted with holes, also called "eyes." The eyes are actually caused by tiny bits of hay present in the milk, according to Agroscope researchers.
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Unravelling the mystery behind holes in Swiss cheese
why we have holes in swiss cheese|TikTok Search
Why does Swiss cheese have holes?
Why Does Swiss Cheese Have Holes?
Swiss cheese: The real reason it has holes - NZ Herald
Why Does Swiss Cheese Have Holes?
Why Does Swiss Cheese Have Holes?
Why Does Swiss Cheese Have Holes?
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Why does Swiss cheese have holes?
TIL that the holes in Swiss cheese were, until recently, seen as a sign of imperfection and something cheesemakers tried to avoid : r/todayilearned
Why Does Swiss Cheese Have Holes?
Why Does Swiss Cheese Have Holes?