Sito has a long history. Dumplings made from foxtail millet have been found in archeological Satsumon remains discovered in Atsuma.[8] Traditional Ainu cuisine did not use steamed rice to make dumplings, as the Japanese did with mochi. The Ainu first came in contact with Japanese style mochi after the Edo period when more ethnic Japanese moved to live in the same areas as the Ainu under the land contract system.[2]:171