Wakaayu is a kind of Japanese confectionery which is made with gyuhi (a kind of rice cake made from glutinous rice or glutinous rice flour) wrapped in an oval sponge cake, shaped into a semicircle and marked with an eye and fins.
若あゆ（若鮎、わかあゆ）は、楕円形に焼き上げたカステラ生地で求肥をつつみ、半月形に整形し、焼印で目とひれの印をつけた和菓子である。