Sesame cultivation in Korea dates to antiquity; stone-grinding and pressing technology for sesame oil is documented throughout Korean history
Korean sesame oil (참기름, chamgireum) is produced by toasting white sesame seeds (Sesamum indicum) until golden-brown, then cold-pressing them to extract a deeply aromatic, amber oil. The toasting stage is the flavour-determining step: lightly toasted seeds produce a pale, mild oil; deeply toasted seeds produce the characteristic dark amber oil with intensely nutty, roasted aromatics that define Korean cooking. Sesame oil in Korean cuisine functions as a finishing flavour, not a cooking medium — it is added at the end of cooking or at the moment of serving, as its volatile aromatics are destroyed by heat.
Sesame oil is the last note in Korean cooking — the finishing touch on namul, jjigae, and rice dishes that signals the dish is complete. Its presence or absence in Korean cuisine is one of the most distinguishing aromatic differences from Chinese cooking.
{"Toast sesame seeds over medium heat in a dry pan, stirring constantly — they toast unevenly; constant movement ensures uniform colour; the transition from cream to golden happens quickly and the seeds continue to colour after removal from heat","The target colour: golden brown with a faint brown edge, not dark brown — dark brown seeds produce a bitter oil; pale seeds produce insufficient flavour","Cold-press extraction: the toasted seeds are ground then pressed at room temperature without additional heat — the cold-press is critical for preserving the volatile aromatic compounds developed during toasting","Add to dishes at the very end, off heat — heat after adding destroys the aromatic compounds developed through cold-press production"}
Small-batch, stone-ground Korean sesame oil produced at specialty mills (방앗간, bangat-gan) has a depth that commercially produced oil cannot match. Traditionally in Korea, sesame seeds were brought to the local mill for grinding and pressing — the proximity of production to use preserved the volatile aromatics. Premium brands (Ottogi premium, Sempio stone-ground) represent the best commercial versions. Taste the oil directly: quality sesame oil has an intense, clean toasted nut fragrance; oxidised or inferior oil smells flat and slightly rancid.
{"Using sesame oil as a stir-fry medium at high heat — this destroys the precisely developed aromatics from cold-pressing; Korean cooking adds sesame oil as a finishing touch, not a primary cooking fat","Using Chinese sesame oil (lighter colour, different seed preparation) as a substitute — the flavour profile is significantly different; Korean chamgireum has a more intense, darker toasted character"}