I had cheese in the eastern DRC. It was surprising and delicious. So, here is a BBC story about Congolese cheesemakers.
On the other hand, here is another BBC story about how Korea's national food is spreading around the world. kimchi is fermented cabbage. It is an acquired taste but Koreans love it. I'm not sure how the government is going to boost domestic consumption (as the article argues) given how much kimchi Koreans already eat. It's also, once you get used to it, a little addictive - those who leave Korea often crave it for months and months after they return to kimchi-free countries.
On a WTF note, is Psy really the only thing you know about Korea, BBC?