Many desserts commonly available in Japan can be traced back hundreds of years.
[1] In Japanese cuisine, traditional sweets are known as wagashi, and are made using ingredients such as red bean paste and mochi.
For example, although the original kasutera (castella) was introduced from Portugal, it has been around for more than 400 years and has been modified to suit Japanese tastes, so it is classified as a wagashi.
[7] Wagashi (和菓子) is a traditional Japanese confectionery which is often served with tea, especially the types made of mochi, anko (azuki bean paste), and fruits.
[9] Wagashi are made in a wide variety of shapes and consistencies and with diverse ingredients and preparation methods.