1 large English cucumber, peeled and sliced into thin half-moons
3 T. rice vinegar
1 T. Ume plum vinegar (optional)
1-2 T. agave nectar
¼ tsp. sea salt, or to taste
1-2 T. toasted black sesame seeds
Toss all ingredients in a mixing bowl, and let marinate for at least 30 min. Drain off excess liquid, and serve.
*I like to save the excess liquid and use it to make a salad dressing.