Japanese Udon Noodles

Boil 10 cups of water in a deep cooking pan. Add dried Udon noodle and cook for 7 minutes. Strain the water and wash the noodle with warm water. For udon soup, add hontsuyu and water in a small sauce pan and warm it up. Put udon noodle in a soup bowl, then pour over the soup. Sprinkle green onion, and serve. To add zest to the flavor, you can sprinkle Nanami Togarashi over udon.