Assi Udon Noodle is a quick and easy way to make Japanese traditional udon noodles at home. Soft and chewy udon noodles make your udon more delicious. 1. Boil water in a large pot, add 2-3 teaspoons of salt, and boil the noodles in an appropriate amount. 2. Boil the udon noodles for 5-6 minutes. 3. Remove noodles and rinse with cold water. 4. Put the udon noodles in the prepared bowl, add the broth, and serve with various udon toppings according to your preference.