KOIKE-YA, the pioneer in the field of Japanese snacks, has been founded since 1953. We produce and sell potato chips, corn snacks and health foods.

It has made first success of mass production for potato chips in Japan, and has developed a number of unique, original brands such as “KARAMUCHO”.

We are making every effort to develop a new material, new package and new market that can innovate current food cultures.


  • What is KARAMUCHO?

    No.1 favourite spicy snack brand in Japan* A fine combination of spiciness and umami. *Intage SRI data: Spicy Snack Brand Category in Japan (2018.1-2019.12).
  • Who is the grandma on the package?

    Her name is TOMI MORITA. We call “Hee Oba-chan”. She is 142 years old. A symbol of KARAMUCHO!
  • What kind of brands does KOIKE-YA have?

    KOIKE-YA has several unique brands.
    Karamucho, Polinky, Sucorn, Dontacos and so on... Please try it if you trip to Japan!
  • What does our brand, "Potechi" mean?

    The coined word combined with “potato” and “chip”.
    A commonly used word for potato chips in Japan.
  • Where to get "Potechi"?

    Potechi is available in Europe.
    You can get "Potechi" at the store mainly in UK, France, Belgium, Holland, Germany, Spain, Norway and so on.
  • What is the competitive advantage over other potato chips?

    Seasoned with totally selected ingredients. It’s the fruits of trial and error for more than 60 years.