Senryu (humorous or ironical haiku), 'Form rice of sushi by hand as quickly as a sorcerer forms a round shape with fingers,' in "Yanagidaru" (a collection of senryu) (1829; year when the haiku was made was 1827) was the first description of Nigiri-zushi appearing in literatures.
「妖術という身で握る鮓の飯」『柳多留』（文政12年1829年作句は1827年）が、握り寿司の文献的初出である。