- [Narrator] Cheesecake, banana, rum raisin,

purple sweet potato, wasabi?

These are just a few of the Kit Kat flavors of Japan,

a country where the love

of this crispy chocolate wafer runs deep.

And one man continues to push the flavor frontier

further and further.

But before we get to him, here's a little background info.

(driving upbeat music)

(Yuji speaking in foreign language)

And there are a lot of flavors to choose from.

(Yuji speaking in foreign language)

And those flavors can change

based on where you are in the country.

(Yuji speaking in foreign language)

And the genius behind many of these flavors

is a classically trained pastry chef.

(Yasumasa speaking in foreign language)

(playful violin music)

(light upbeat music)

(Yuji speaking in foreign language)

And for good reason.

In Japan, Kit Kats have evolved

into more than just a sweet treat.

(Yuji speaking in foreign language)

And for those of you who think it's all business

for Chef Takagi, gimme a break.

(Yasumasa speaking in foreign language)