Fragrant Isewan Seaweed Topping Included
Koikeya Co., Ltd. (President: Akira Sato) has launched a winter-limited flavor, "Winter Agetate Chokusoubin Dashi Umeboshi," from the "Koikeya Agetate Chokusoubin" series, which was renewed in August 2025 and reborn with even more delicious taste. The product is now available for pre-order at the Koikeya Online Shop starting January 1, 2026 (Thursday).
The "Seasonal Agetate Chokusoubin" series has been sold since March 2025 as a seasonal limited edition of "Koikeya Agetate Chokusoubin," potato chips that deliver freshly fried deliciousness. With a focus on seasonal ingredients and flavor development, the chips come with topping ingredients that allow customers to enjoy flavor variations according to their preferences. These seasonal flavors have been highly acclaimed by many customers.
For this new product, the company has adopted "umeboshi" (pickled plum), an auspicious ingredient fitting for the New Year, as a winter-limited flavor. Using plums from Kishu, the chips are crafted with a gentle dashi aroma that enhances the natural umami of potatoes. The mild acidity of the plums creates a pleasant taste, offering a winter-exclusive flavor experience.
The topping ingredient includes "bara-nori" (flaked seaweed) made from fragrant seaweed from Isewan. By sprinkling your preferred amount onto the potato chips, you can enjoy a deep, layered flavor where the rich aroma of seaweed combines with the acidity of plum, bringing out the umami of the potatoes.
Perfect as a drinking companion, a personal treat, or a gift for loved ones, the product is available for pre-order until 5:00 PM on Tuesday, January 13th. Don't miss this opportunity to enjoy winter-limited freshly fried potato chips.
About "Koikeya Agetate Chokusoubin"

Potato chips, made by thinly slicing potatoes and frying them in oil, are at their best when freshly fried—when the natural umami of potatoes and the light texture can be enjoyed most. With the desire to deliver the deliciousness of freshly fried potato chips to customers' hands, the company has established a system that allows immediate shipment once quality inspection is passed after production. This achieves shipment within three days of factory production, delivering the fresh taste and texture as they are.
Additionally, the chips use 100% domestically grown potatoes. Thanks to their freshness, they are not oily, allowing you to fully enjoy the delicate umami of potato chips where the natural flavor of potatoes stands out prominently.
Product Details
Product Name / Contents
"Winter Agetate Chokusoubin Dashi Umeboshi" / 6-bag set (75g per bag)
*Bara-nori topping / 6 bags included (1.5g per bag)
Price
1,980 yen (tax included) per box *Shipping fee not included
Release Date / Sales Channel
January 1, 2026 (Thursday) / Koikeya Online Shop
*Pre-order period: January 1, 2026 (Thursday) 12:00 PM to January 13, 2026 (Tuesday) 5:00 PM
Koikeya Online Shop Sales Page
https://www.koikeya-online.jp/shop/lp/chokusoubin_winter.aspx