すっぽんきのこじゃなかったです
鼈茸じゃなかったです
supponkinokojanakattadesu

Noun
Desu Copula

The polite, past negative form of すっぽんたけ

1. Wasn't honshimeji.; Wasn't puffball mushroom.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana