Gather all the ingredients.
If you are going to/need to make Mentsuyu from scratch, follow the recipe here.
Mentsuyu (noodle soup base): Homemade recipe, click here.
Recipe by Namiko Chen of Just One Cookbook. All images and content on this site are copyright protected. Please do not use my images without my permission. If you’d like to share this recipe on your site, please re-write the recipe and link to this post as the original source. Thank you.