Another native Alaskan delicacy is what's known as stinkheads. These are King Salmon heads that have either been buried in fermentation pits in the ground or placed inside of a barrel or plastic bag where they're left for weeks.

Igunaq-The Inuits in Alaska preserve their meat by cutting it into big steaks then burying it in the ground for months where it ferments in the autumn then freezes in the fall.

In order for beef to be dry-aged it must sit in a temperature and humidity controlled room for 3 weeks. This allows it to develop a moldy crust that’s cut away so that you have a tender steak that’s full of flavor.

Coconut yogurt is a healthy source of non-dairy bacteria. You can make you own by heating coconut milk, adding probiotics, and allowing it to sit on your counter until sour.

This is a very popular dish throughout the Sham-el-Nessim festival in Egypt. It is made by sun-drying mullet then preserving it in salt. Fesikh poisonings are common because the recipes are passed down through generations, making it difficult to get right.

While hákarl is a delicacy in Iceland, it’s a very divisive food elsewhere. This is because it’s rotten shark that’s made by putting a gutted shark into a hole in the sand for 6-12 weeks. It’s then dug up and left hanging for several months before being eaten.

Korean cuisine is known for its kimchi. This is made by covering cabbage with a mixture that's both salty and spicy. It's then allowed to sit in an air tight jar for a couple of days.

Miso-This is a staple in Japanese cuisine, being found in sauces, spreads and marinades. In the US, it's commonly found in soup. It's made by fermenting soybeans then adding barley, wheat and rice.

Pickles are cucumbers that have been soaked in vinegar or a brine solution and left to ferment for a very long time. So next time you pick up a pickle, just think, you're about to eat a rotten cucumber.

Sauerkraut is a type of fermented cabbage. It’s made by mixing shredded cabbage with salt then letting it sit for a bit. Many people say that this is good for your digestion.

In Indonesia, tempeh is a staple. It's made by soaking whole soybeans in vinegar and allowing them to ferment. All of this is then bound together with mycelium, which is a sticky fungus.