noun
shredded kelp; tangle of shredded kelp
A food product made by shaving dried kelp into thin, soft, cotton-like strips. Often used as a topping for rice, in soups, or as a filling in onigiri.
おにぎりにおぼろ昆布を巻いて食べるのが好きです。
I like eating onigiri wrapped in shredded kelp.
おぼろ昆布はお吸い物の具
Shredded kelp is also often used as an ingredient in clear soup.