Is green shavings a dish? Please specify.

Your teacher's name is Qingru, and the meaning of Ru here is actually the general name of vegetables, that is, green vegetables, not just one kind.

eat

ú

(1) vegetables [vegetables]

Millennium street. -Meicheng's Seven Hairs

There is a place to grow vegetables. -"Hanshu Shihuozhi"

But there is another dish called Qingru, which is Ru Ping, also called Qingru and Gu Xiang. It's actually Pleurotus ostreatus.