Mentsuyu (Japanese Noodle Soup Base)
Recipe type: soup
Cuisine: Japanese
Cook time: 
Total time: 
Serves: 2 cups
Mentsuyu is the classic Japanese soup base used for udon and soba noodle dishes. It's also great as a dipping sauce or as a glaze for chicken and fish.
  • ½ cup sake
  • 1 cup mirin
  • 1 cup soy sauce
  • 1 4x4 inch piece of kombu
  • 2 4.4 ounce packets (approx 1 cup) packed Bonito Flakes
  1. Add sake to a medium saucepan over medium to medium high heat. Bring to a boil for a few seconds to help evaporate some of the alcohol. (Not necessary if using cooking sake)
  2. Add the mirin and soy sauce and let come to a simmer.
  3. Add kombu and bonito flakes. Let the mentsuyu come to a boil, then reduce heat to low and simmer for about 5 minutes. Remove from heat and allow to cool.
  4. Strain through a fine sieve and store in an airtight container in the refrigerator for up to one month.
You can find all of the Japanese ingredients found in this recipe at most Asian grocers, but if you don't happen to have one handy, they can also be found on Amazon. These are the brands that I use and trust:

Cooking sake
Soy sauce
Bonito flakes
Recipe by Uncle Jerry's Kitchen at