This is used for Matuura-zuke (a kind of pickles called Matsuura) and Genkai-zuke (a kind of pickles called Genkai), this was also processed into a delicacy called Kujira-noshi (or horihori) in the Edo period.
松浦漬や玄海漬に用いるほか、江戸時代には鯨熨斗(くじらのし、ホリホリともいう）という珍味にも加工された。