You really covered all their cuisines I really look forward to enjoying and the likes of hotteok that I don't know about.
I know of banana milk ๐. It's little size reminds me of bobo ๐ and makes it look funny like a children's drink but everyone drinks and enjoys it.
And soju? I may not be a fan of alcohol but I won't hesitate to take a gulp. When I get the chance ๐