I know, I've mentioned Coffine Gurunaru before already. But really, it's so interesting to have a place that actually has Korean staff and serves stuff that you would find in Seoul, right? Like a super creamy espresso con panna, or the super popular (in Seoul) "bread" - a sort of slightly toasted huge box bread with sauce (in this case, raspberry) and a huge scoop of something on top (whipped cream - or butter?).
Anyhow. If you can't make it to Seoul and want Korean food AND desserts, the gay district (Zona Rosa) of Mexico city seems the place to go, eh?