I was served this side salad at a few restaurants and loved its nutty flavor and utter simplicity. The key is roasted ground sesame seeds: 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.
1 1/2 tablespoons roasted ground sesame seeds
1 tablespoon coarsely ground Korean chile (gochugaru)
1 1/2 tablespoons dark sesame oil
1 1/2 tablespoons rice vinegar
1 1/2 teaspoons lower-sodium soy sauce
1/4 teaspoon kosher salt
6 cups torn romaine lettuce
1/3 cup slivered red onion
How to Make It
Combine first 6 ingredients in a large bowl, stirring with a whisk. Add lettuce and onion; toss to coat. Serve immediately.