For the marinade combine the following in a small glass baking dish:
¼ cup soy sauce
1 tsp wasabi powder
3 TBS saki
3 cloves finely chopped garlic
-Put 4, 6 ounce Ahi tuna steaks (about ¾ inch thick) into the marinade and let stand 20 minutes.
-Trim the tips from 1# green or roma beans.
-Cook the beans in salted boiling water for 4 min, then drain well and set aside.
-Remove the tuna steaks from the marinade, reserving the remaining marinade.
-Put a heavy skillet over medium heat until quite hot.
-Sprinkle tuna steaks with 1 tsp sesame seeds and then sear for 2 minutes on each side (don’t over cook!).
-Transfer the tuna steaks to a plate.
-Add the green beans to the pan, along with the reserved marinade and the following:
3 TBS chopped dill, basil or cilantro
1 tsp brown sugar
-Cook the beans for 3 minutes until sauce is reduced.
-Put the beans on the plate along with the tuna, spoon the sauce over top and serve.