Small Korean place run by actual Koreans on Second Road near Soi 13. Their bulgogi is marinated for 24 hours and grilled tableside on proper charcoal. 320 THB per portion comes with banchan (side dishes) that they refill unlimited.

The kimchi is properly fermented and spicy, not the sweet tourist version. Try the galbi short ribs if you want to splurge - 480 THB but incredible quality. They import gochujang and other ingredients from Seoul. Cash only, no English menu but pointing at other tables works.