Toto meisho Takanawa nijuroku ya machi yugyo no zu (Amusements While Waiting for the Moon on the Night of the Twenty-sixth in Takanawa, a Famous Place in the Eastern Capital) Kanagawa Prefectural Museum of History Archives

Nigiri zushi (sushi) incorporated seafood caught from the oceans around Edo, and was thus called Edomae (“Edo-style”).
It could be made on demand for customers at food stands, which served the needs of those who wanted to eat quickly, aligning perfectly with the mentality of Edoites.