5 years late reply. This chapter doesn't talk about "Genghis Kahn cooking", they talk about mongolian BBQ with bullshit backstory about mongolian tradition.
However there's one japanese dish that's called Genghis kahn (Jingisukan) refers to grilled MUTTON dish invented in Hokkaido. The grill is...
Personally I've never feel they're on par. I always thought Kiriko is just plot device to show "normal" adversary as foil to Jan. As if she'll be thrown away the moment the story want to. Her dishes usually aren't given too much thought, sometimes doesn't get enough spotlight compared to Jan or...
I dunno why people care that much about the ending. For this kind of roller coaster manga, the most important thing is the journey and it has been fun.
Besides, you could think the plotholes (ironically) as realistic elements because in real life you rarely get satisfying answer/explanation...
Eh it's still a bit weird. I assume the author is still young too, so he doesn't know better.
I mean, "a proper adult" is such great response, but I would say even 25 (8 years from current timeline) is plenty proper, no need for 15 years. You just get out of university, fool around with money...