Saikaan Ooki / Imoya Shodai Senjiro

"Saikaan Ooki" began with sweet potato confections devised by founder Senjiro Ooki. After the war, it developed the manufacturing wholesale of sweet potato confections mainly in the Koedo Kawagoe area — a historic confectionery shop that has walked alongside sweet potato culture.

The second generation encountered the phantom potato "Kurimasari" and started contract cultivation in Hiratsuka City, Kanagawa Prefecture. While inheriting sweet potato confections, the third generation focused on full-scale Japanese confectionery making and — from the desire to "deliver confections that color the seasons" — renamed the shop from "Kaho Ooki" to "Saikaan Ooki."

The current fourth generation, under the management philosophy "for feelings of gratitude and smiles," expands the lineup to sweet potato confections, Japanese sweets, Western sweets, and gifts — while also reaching many customers through exhibitions at station buildings and department stores, communicating the appeal of sweet potatoes. While reflecting Saitama's sweet potato culture and Japan's four seasons in confections, the shop continues to challenge new sweet potato sweet proposals.

Founded in 1934, a long-established sweet potato and Japanese confectionery shop continuing for four generations

"Saikaan Ooki," which started with the manufacturing wholesale of sweet potato confections mainly in the Koedo Kawagoe area. Over four generations from founder Senjiro Ooki, the shop has carried on confectionery making centered on sweet potatoes and Japanese sweets reflecting the changing seasons.

Generous use of the phantom contract-cultivated potato "Kurimasari"

Using the rare variety "Kurimasari" contract-cultivated in Hiratsuka City, Kanagawa Prefecture. Grown in well-draining land, this potato has good compatibility with oil, characterized by a light texture and sweetness that spreads as you chew — supporting the flavor of signature products such as "Imo Matsuba" and "Gin no Imo."

Ingredients sourced down to production area — wasanbon sugar, dainagon azuki, Yoshino kuzu, and more

Using ingredients carefully selected from various parts of Japan — including Tokushima-grown wasanbon sugar, Hokkaido-grown "Hokkai Dainagon" azuki, Nara-grown Yoshino kuzu, and Yamagata-grown glutinous rice. Of course sweet potato confections, but also yokan, kuzukiri, ama-natto, and seasonal cold sweets — all finished one by one with careful handwork.

Sweet potato confection / Japanese & Western sweets gifts perfect for presents

A substantial selection of gift sets combining the potato chip "Gin no Imo," the candied potato "Imo-komachi," sweet potato pies, and baked sweets. A lineup easy to choose for mid-year / year-end gifts, seasonal greetings, and as Saitama / Kawagoe souvenirs.