The name is a fun Korean abbreviation:
- Doo (두): Short for Doo-ggeop-da (Thick)
- Jjon (쫀): Short for Jjon-deuk-ha-da (Chewy/Fudgy)
- Koo (쿠): Short for Cookie
It refers to oversized, chunky cookies that are almost like a piece of cake or fudge.
It started in small artisan bakeries in Seoul. Unlike traditional thin, crispy cookies, these focus on a "heavy satisfaction."
In Korea, the "visual" of dessert is just as important as the taste, making these thick cookies perfect for Instagram and TikTok.