1. Boil a large pot of water. Add washed green beans. Keep heat on high and stir occasionally. Beans will be done soon after water returns to boiling. Test for doneness when water starts boiling and every minute afterwards. Beans should be crisp, but without a raw flavor. Beans will continue to cook after draining. 2. Coat hot beans in ponzu. Beans have enough sauce when 1-2 teaspoons of sauce is on the bottom of the bowl after tossing/gently stirring beans. 3. Top with sesame seeds. 4. Toss again just before serving. Variant: lightly toast sesame in dry skillet until fragrant while stirring constantly. Grind seeds for more sesame flavor.