From Kaesong.
Pin · Kaesong (nudged 0.33° N of the mandu pin)
- OriginKaesong · Goryeo capital · Korean

Not known yet We don’t yet have a written story, a recipe or a dated or primary source for Pyeonsu. What we do have is below, with its sources.
From Kaesong.
Pin · Kaesong (nudged 0.33° N of the mandu pin)
Reasonably sure. Reference works agree, but we have not yet found a dated or primary source.
The grade comes from the project's source report and has not yet been checked source by source. How grading works.
First record Term in Hunmong jahoe, 1527 (D); 'pyeonsu of Songdo' in Gyuhap chongseo, 1809 (D)
Derived from Ming dumplings via Kaesong merchants (Wikipedia, G).
This entry is drawn from the World Dumpling Atlas, §6.6, the project's source report. Its grade, S secondary consensus, says how far that has been checked against a primary source.
Family A