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For Soup Broth

  • ▢ 2 ¼ cups dashi (Japanese soup stock; click to learn more) (Homemade dashi recipe below; or 2 ¼ cup water + 1 to 1 ¼ tsp dashi powder)
  • ▢ 1 Tbsp mirin
  • ▢ 1 tsp sugar
  • ▢ 1 Tbsp usukuchi (light-colored) soy sauce (or regular soy sauce; we use light color soy sauce here so the soup doesn’t become too dark)
  • ▢ ½ tsp kosher/sea salt (I use Diamond Crystal; use half for table salt)

For Kitsune Udon

  • ▢ 2 servings udon noodles (180 g dry udon noodles; 500 g frozen/boiled udon noodles)
  • ▢ 4 inari age (seasoned fried tofu pouch) (You can buy canned or refrigerated inariage package; Homemade inariage recipe, click here.)
  • ▢ 1 green onion/scallion
  • ▢ 4 slices narutomaki (fish cakes) (optional; skip for vegetarian/vegan)
  • ▢ Shichimi Togarashi (Japanese Seven Spice) (optional; sprinkle at the table)

For Homemade Dashi

  • ▢ 2 ½ cups water
  • ▢ 1 kombu (dried kelp) (2″ x 5″, 5 cm x 12 cm)
  • ▢ 1 ½ cups katsuobushi (dried bonito flakes) (0.5 oz: skip for vegetarian/vegan)


Gather all the ingredients. Before we start: It’s really important to have good flavorful dashi for this recipe. Although you can take the shortcut by using dashi powder or dashi packet, I encourage you to make your own dashi because the broth tastes so much better! It only takes less than 30 minutes to make

To Make Homemade Dashi (Please skip if you already have dashi)

  • Put the kombu and 2 ½ cup water in a measuring cup for at least 30 minutes. If you have time, soak for 3 hours or up to half a day. Kombu’s flavor comes out naturally from soaking in water. If you don’t have time at all, skip soaking.Kitsune Udon 1
  • Transfer kombu and water to a saucepan. Slowly bring to a boil over medium-low heat. Kitsune Udon 2
  • Just before boiling (you will see bubbles around the edges of the pan), remove the kombu. If you leave the kombu inside, the dashi will become slimy and bitter. Now this broth is Kombu Dashi (vegetarian/vegan) and it’s ready to make udon soup. For non-vegetarian/vegan, add 1 ½ cups katsuobushi and bring it to a boil again. Kitsune Udon 3
  • Once the dashi is boiling, reduce the heat, simmer for just 15 seconds, and turn off the heat. Let the katsuobushi sink to the bottom, about 10-15 minutes. Strain the dashi through a fine-mesh sieve set over a saucepan. Now you have roughly 2 ¼ cup dashi.straining the dashi through a fine-mesh sieve set over a saucepan

To Make Udon Soup

  • In a saucepan, add the dashi, 1 Tbsp mirin, 1 tsp sugar, 1 Tbsp soy sauce, and Â½ tsp kosher salt and bring to boil. Once boiling, turn off the heat or cover and keep on a low simmer.Kitsune Udon 2

To Prepare Toppings

  • Squeeze excess liquid from the inariage (or you can keep it as it is). Cut the green onion into thin slices.  Slice the Narutomaki fish cake into 1/8 inch (3 mm).Kitsune Udon 5

To Prepare Udon Noodles

  • Bring a large pot of water to boil for udon noodles. My favorite udon is the frozen Sanuki Udon. Cook the frozen udon noodles in boiling water for 1 minute (no need to defrost).  If you use dry noodles, follow the package instructions.Kitsune Udon 3
  • Pick up the noodles in a strainer or drain the hot water.  Make sure to remove excess water (which will end up diluting your soup).Kitsune Udon 4

To Assemble

  • Serve udon noodles and hot soup in serving bowls and top with inariage, narutomaki, green onion and sprinkles of shichimi togarashi.Kitsune Udon 6 Auth

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