Have you tried the Goguma (Korean Sweet Potato) Cake?
There is a Korean bakery called "Shilla Bakery" here in the Washington DC region, and they sell Goguma cake and it is really scrumptious. I'm not sure how common Goguma Cake is in Korea, but if you can, I would greatly appreciate it if you can show us how to make this delicious cake!!!
Thank you in advance.