Ukishima [浮き島 (うきしま)]
Ukishima stands for „floating island“ or „swimming plants“. This Wagashi consists of 2 layers. The lower, dark layer stands for the roots, while the upper layer is green and represents growing plants.
Ukishima is a light steamed cake made of Anko, rice flour from Joshin-ko and Hakurikiko.
Normally it is steamed in a rectangular shape, the Nagashikan, and then cut into pieces. Preferably, this „cake“ should be served the same day with a bowl of matcha.
Here you can find the recipe of Ukishima!
Sources:
Wagashi Maniacs Artikel zu Ukishima