isobe mochi; grilled mochi with soy sauce and nori
A Japanese snack or side dish consisting of grilled or fried mochi (rice cake) coated with a sweet-savory soy sauce glaze and wrapped in a sheet of nori seaweed. The name comes from 磯辺 (isobe, 'seashore'), evoking the seaweed.
See also: 磯辺 (いそべ)
I look forward to eating isobe mochi during the New Year holidays.
The savory aroma of soy sauce on isobe mochi whets the appetite.
磯辺焼き can refer to various grilled foods with nori, but 磯辺餅 specifically refers to the mochi version.
From 磯辺 (isobe, 'seashore') + 餅 (mochi, 'rice cake'). The name reflects the use of nori seaweed, which is associated with the seashore.