I have previously attended these classes hosted by the Itaewon Global Village Center.
You go, get into small groups, and learn how to prepare Korean dishes.
It was a really great experience for me! Especially I can get a chance to meet other foreigners living in my area!
If you are interested, you can contact them. All classes must be paid in advance however. This is a very nice, clean cooking school!
If you know where Kosney and Top Ten in Edae is, it is in the same building!
Hope to see you there!