The Gunma area is where they grow the most of the roots in Japan that are turned into konyakku, a slightly tasteless paste which can be shaped into a lot of forms. It is very popular because it essentially has zero calories. But it is extremely popular and the lines can be murder on public holidays. We got there at 9 which is opening time, and had to stand in line 2.5 hours for the buffet. The big draw is the free buffet of konyakku products, but there is also a gift shop and you can visit the factory. Personal recommendation: try the liver konyakku and the fruits jellies. Charge (seniors/adults/children): 0 Typical period of stay: 1-2 hours Wheelchair accessible: Yes Family friendly: Yes Smoking allowed: No Allergy alternatives: No Vegetarian alternatives: All of it. English menu/information: No Staff speaks English: No Separate mens & ladies toilets: Yes Clean & fresh toilets: Yes Washiki or sit-down toilet: Sit-down Free wi-fi: Yes Free (and ample) parking: Yes Takes credit cards or cash-only: Cards and cash.