Nagaimo is a variety of the Japanese yams called “Yamaimo.”
This variety growns long and straight, somewhat thick at one end, making it look somewhat like a small baseball bat.
It has rough, tan-coloured skin that is a bit hairy. The flesh inside is white.
It is starchy, to the point of being mucilaginous; the more you stir chopped up pieces, the more starch gets released.
It is often served raw in small, fine julienne pieces in salads.