Place the dried noodles into a large heat-proof mixing bowl. Pour boiling hot water over them so they are fully submerged. Stir every minute or so to loosen. Submerge for about 4 to 5 minutes, or until tender, tasting often for doneness. Do not overcook. Drain and rinse thoroughly with cool water. Drizzle with sesame oil if not using right away. Cover the bowl with a damp cloth until ready to use.