For the vinegar dip, first heat a heavy frying pan without fat over medium heat. Toast the sesame seeds in it, stirring constantly, until they take on color and begin to smell fragrant.
Crush the seeds in a mortar along with the salt. Put the remaining ingredients in a small bowl and mix well. Add the toasted and crushed sesame seeds to the vinegar dip.
Preparation Tip:
This vinegar dip is typically Korean and is served with many Korean dishes.