Dice the cucumbers and set aside. In a dry nonstick skillet, toast sesame seeds over medium-high heat until they turn a rich, golden brown. Whisk together next five ingredients. Toss dressing over cucumbers, sprinkle with toasted sesame seeds, and stir. Refrigerate for 3 hours or more. The longer it marinates, the better the flavor! Optional additions/substitution: Add a small, finely diced red onion or two green onions. For regular sesame seeds, substitute black, untoasted sesame seeds. Garnish with green onions and julienned carrot. Serves four.