The shumai dumplings from Kiyoken are known as a famous food of Yokohama. At the Yokohama factory, you are able to tour their shumai and o-bento lunchbox production lines. The tour takes approximately 90 minutes. On this tour you can learn about the history of the popular Ekiben lunch boxes and learn the secret to producing the delicious shumai o-bento lunch boxes. Through the glass you can witness the important manufacturing process. Why not enjoy something that can only be enjoyed at this particular place? There is also a mini museum shop in the factory where you can eat freshly cooked shumai and buy souvenirs.