Instructions

  1. Cook green beans in large pot of boiling water until crisp-tender, about 3 minutes. Drain.
  2. Transfer green beans to large bowl of ice water to cool. Drain again.
  3. Pat green beans dry. (Can be prepared 1 day ahead. Wrap green beans in paper towels and enclose in resealable plastic bag. Refrigerate.).
  4. Toast sesame seeds: Heat the seeds in a dry pan over medium heat, or on a sheet in a 275ºF oven, until golden and fragrant, about 5 minutes.
  5. Heat oil in heavy large wok or nonstick skillet over high heat.
  6. Add green beans and stir-fry until heated through, about 2 minutes.
  7. Add soy sauce, vinegar, sugar, and pepper. Stir-fry until sauce reduces slightly and loosely coats green beans, about 2 minutes longer.
  8. Add toasted sesame seeds and toss to coat.
  9. Transfer green bean mixture to bowl and serve.