It is difficult to classify dishes as being nihon-ryori based on their ingredients or the cooking method used, and some dishes seem to be regarded as both wa-shoku and yo-shoku (examples: ginger-fried pork and pork ginger).
素材や料理法からはどちらとも判断がつけがたい上に、和食、洋食の両方の扱いを受けているようにも見えるもの（例豚肉の生姜焼きとポークジンジャー）