Konnyaku is a zero-calorie, high-fiber food made from the corm of the Amorphophallus konjac plant.
The factory utilizes advanced industrial automation to process the konjac corm into various forms, including blocks and string-like noodles.
The park is owned and operated by the Yokokawa-based company Mannan Life.
The site hosts a unique 'Konnyaku Museum' section that explains the historical transition of konjac from a medicinal ingredient to a culinary staple.
The free buffet is specifically designed to demonstrate how konjac can be used in both savory and sweet culinary applications.
Konnyaku Park is a dedicated production facility and visitor center centered on the manufacturing of konjac, a traditional Japanese health food made from the konjac potato. Visitors can observe the automated manufacturing process through glass viewing galleries that overlook the factory floor. The facility features a large-scale free konjac buffet, allowing guests to sample various preparations of the product, including noodles, jellies, and stir-fries. The park also houses an exhibition hall detailing the history of konjac cultivation and the health benefits of its high dietary fiber content. An adjoining retail shop sells a wide range of konjac-based goods, including desserts and skincare products. Outdoor grounds include a足湯 (foot bath) area and seasonal gardens for casual recreation. As of June 2026, the facility remains operational and is a notable regional destination in Gunma Prefecture.
The colorful, mascot-themed entrance gate and the large food-shaped art installations in the garden.
Arrive early to beat the lunch-time crowds at the complimentary buffet area.
Pack a small hand towel to utilize the outdoor foot baths located on the park grounds.
Check the retail store for exclusive, factory-direct products not found in standard supermarkets.
Do not attempt to walk to the facility from the nearest train station as it is located in an industrial-agricultural zone with limited pedestrian infrastructure.
Open year-round, seven days a week, including holidays.
No special dress code; remove shoes if entering specific indoor lounge areas; maintain orderly queues at the buffet station.
