Add noodles a few at a time to boiling water. To prevent noodles from sticking to the bottom of the pan, stir gently until the water returns to a rapid boil. Cook dried noodles for eight to ten minutes, then drain and rinse with cold water to stop cooking (fresh noodles should be cooked for only three to five minutes). Toss with tahini dressing and serve chilled, or top with stir-fried vegetables.