Who he is
Korean-American, 2023 US Barista Champion for Onyx Coffee Lab and a top-finisher at WBC. Now a leading figure in the Onyx competition team.
Philosophy
- Onyx-style precision — every variable measured, nothing left to feel.
- Coffee competition as a creative discipline, not just a technical one.
Notable quotes
"Competition is just regular barista work, performed under a microscope."
Signature gear & coffee
- La Marzocco · Mahlkönig
- Onyx Coffee Lab Geishas, CM lots
Known for
- US Barista Champion
- Onyx Coffee Lab competition lead

