ごんにゃくじゃなかったです
蒟蒻じゃなかったです
gonnyakujanakattadesu

Noun
Desu Copula

The polite, past negative form of こんにゃく

1. Wasn't konnyaku.; Wasn't a novice.

Past/Perfective
Negative
Polite
Casual Register
Food
Usually Written in Kana