>fiddlehead jelly cake 蕨餅/わらびもち (warabi mochi)

Traditionally, fiddlehead cake was an exclusive confection prepared for the wealthy. Basically it's translucent jelly made with fiddlehead fern starch and sugar, filled with red beans and powdered with soybean flour. Nowadays sweet potato or tapioca starch is typically used instead of fiddlehead fern starch, and it's popular in summer in the Kansai region. The cube version reminds me of Turkish delight. Considerably less sweet, apparently.