1. Cut chicken into thin slices.
2. Dice scallion.
3. Cut Shiitake mushrooms into thin strands.
4. Boil udon noodle until well done.
5. Drain udon noodle.
6. Heat 1 tbsp sesame oil or skillet over high heat until hot (Approx. 350 F).
7. Add chicken and shiitake mushrooms and stir fry until done.
8. Add udon, sencha loose leaves, soy sauce, sherry or sake, rice wine vinegar, then stir fry until hot.
9. Top off with diced scallion and sesame seeds.