The Mystery of Swiss Cheese Holes Gets Discovered

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CHARLOTTE, N.C.–The mystery of holes in Swiss cheese has finally been solved.

A Swiss agricultural institute discovered that the mysterious holes in Swiss cheese are caused by tiny specks of hay.

As milk matures into cheese, extremely small hay particles help create the holes in the traditional Swiss cheese.

Scientists tested different amounts of hay dust to the milk which allowed them to regulate the number of holes in the cheese.