1 tablespoon toasted sesame oil
1 small yellow onion, sliced into strips
4 heads baby bok choy, chopped
6 fresh shiitake mushrooms, sliced
1 tablespoon mirin or rice vinegar
1 tablespoon tamari
Sesame seeds, optional

Heat oil in a frying pan. Add onions, turn heat down and cook 5 minutes, stirring occasionally. Add shiitakes, bok choy, mirin and tamari. Cover and cook 3 minutes. Spread on a flat surface to cool and stop greens from cooking. Garnish with toasted sesame seeds.  Enjoy!