Look for roasted ground sesame seeds at Korean markets. They're not ground to a powder but crushed a bit. You can make your own by toasting sesame seeds until deeply golden, allowing them to cool, and crushing with a mortar and pestle. Serve this sauce with Scallion Pancakes and Shrimp Mandu.
1/4 cup lower-sodium soy sauce
3 tablespoons water
1 tablespoon rice vinegar
1 1/2 teaspoons sugar
1 1/2 teaspoons roasted ground sesame seeds
2 tablespoons thinly sliced green onions
1 red jalapeño pepper, sliced
How to Make It
Combine first 5 ingredients in a small bowl, stirring until sugar dissolves. Add onions and jalapeño.