炊かしが

かしが · kashiga

verb 未然形

炊が is the negative stem of 炊ぐ — to cook (grains, e.g. rice).

How it’s built

炊ぐ炊が

Negative stem (未然形). Never used alone — it is the base for ない (not), れる/られる (passive), せる/させる (causative): 書か → 書かない.

炊ぐ is a godan verb (u-verb), so it follows that pattern.