People are only just learning baffling reason why some cheeses have holes in them
![People are only just learning baffling reason why some cheeses have holes in them](https://i2-prod.mirror.co.uk/incoming/article31799741.ece/ALTERNATES/s615/1_Chesse-crackers-and-grapes.jpg)
People can't brie-lieve the reason why our beloved Swiss cheese has a holey appearance - and no, it's not because a mouse has been secretly nibbling on it. It is all to do with the milking process