The
wūyú zǐ is almost always the roe pouch of the flathead grey mullet (
Mugil cephalus). Mullet fishing in Taiwan can be traced back to when the island was under
Dutch colonial rule. Early historical accounts, from the ''
to the General History of Taiwan'' mention this delicacy.
Wūyú zǐ was traditionally only consumed seasonally—from December to January—when spawning mullet arrived at the island's southeastern coast. The delicacy came to be associated with the
Lunar New Year that falls in January or February. The town of
Donggang in
Pingtung County specializes in the delicacy. ==See also==