Uiro, also known as uiro-mochi, is a traditional Japanese steamed cake made of rice flour and sugar. It is chewy, similar to mochi, and subtly sweet. Flavors include azuki bean paste, green tea (matcha), yuzu, strawberry and chestnut. Nagoya is particularly famous for its uiro, but there are other regional versions, notably in Yamaguchi and Odawara. It can also be purchased in traditional Japanese confectionery shops throughout Japan. Uiro was originally the name of a medicine in the Muromachi-era (1336 – 1573). References to uiro as a confection first appear in the Wa-Kan Sansai Zue, Ryoan Terajima's massive Edo-era dictionary published in 1712.