なれすしじゃありませんでした
なれ鮨じゃありませんでした
nare sushijārimasendeshita

Noun
Desu Copula

The polite, past negative form of なれずし

1. Was not/is not seasoned sushi.; Was not/is not narazuke.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana