The Italian island of Sardinia sits in the middle of the Tyrrhenian Sea, gazing at Italy from a distance. Surrounded by a 1,849-kilometer coastline of white sandy beaches and emerald waters, the island's inland landscape rapidly rises to form hills and impervious mountains.

And it is within these edgy curves that shepherds produce casu marzu, a maggot-infested cheese that, in 2009, the Guinness World Record proclaimed the world's most dangerous cheese.