What is a traditional wagashi recipe that you would recommend for someone looking to make authentic Japanese sweets at home?

One traditional wagashi recipe that I recommend for making authentic Japanese sweets at home is "daifuku." Daifuku is a soft and chewy mochi rice cake filled with sweet red bean paste. It is a popular and relatively simple wagashi to make, requiring only a few ingredients such as mochiko (sweet rice flour), sugar, water, and red bean paste. The process involves making the mochi dough, shaping it into small balls, and filling them with the sweet red bean paste. Daifuku is a delicious and classic wagashi that is enjoyed by many in Japan.