- 2 tablespoons olive oil
- 1 tablespoon sesame seeds
- 1 scallion
- 2 teaspoons balsamic vinegar
- 1/2 teaspoon Dijon mustard
- 1/2 head radicchio
- 1 bunch arugula
- In a small skillet heat 1 tablespoon oil over moderate heat until hot but not smoking and cook sesame seeds, stirring, until pale golden, about 1 minute. Mince scallion and in a small bowl whisk together with sesame seeds, remaining tablespoon oil, vinegar, mustard, and salt and pepper to taste until emulsified. Tear radicchio into bite-size pieces and in a bowl toss together with arugula and vinaigrette.