Udon Soup Recipe
Introduction
This comforting Udon Soup is a simple yet flavorful Japanese dish featuring tender udon noodles in a savory dashi-based broth. It’s perfect for a quick meal that warms you up and satisfies your noodle cravings.

Ingredients
- 5 cups water
- 5 teaspoons instant dashi granules
- 2 tablespoons dark soy sauce
- 2 tablespoons light soy sauce
- 1 tablespoon sugar
- 2 tablespoons mirin
- 1 pound dried udon noodles
- 1/4 cup green onions, thinly sliced
- Seven-spice mixture (optional)
Instructions
- Step 1: Cook the udon noodles according to the package instructions. Once cooked, drain them and rinse under cold water to stop cooking and remove excess starch. Set aside.
- Step 2: In a large pot, bring 5 cups of water to a boil. Add the instant dashi granules, dark soy sauce, light soy sauce, sugar, and mirin. Stir to dissolve the sugar and dashi completely, then reduce the heat and let the broth simmer gently.
- Step 3: Divide the cooked noodles evenly among four bowls. Ladle the hot broth over the noodles.
- Step 4: Garnish each bowl with thinly sliced green onions and, if desired, a sprinkle of seven-spice mixture. Serve immediately while hot.
Tips & Variations
- For added protein, top the soup with cooked chicken, tofu, or a soft-boiled egg.
- Use fresh udon noodles if available for an even chewier texture.
- Adjust the soy sauce and sugar to taste for a sweeter or saltier broth.
- Add vegetables like mushrooms or spinach to make the soup heartier.
Storage
Store leftover broth and noodles separately in airtight containers in the refrigerator for up to 2 days. Reheat the broth on the stove until simmering before adding the noodles back in to warm through. Avoid reheating noodles too long to prevent them from becoming mushy.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use homemade dashi instead of instant granules?
Yes, homemade dashi will add more depth and a fresher flavor to your broth. Substitute 5 cups of homemade dashi for water and omit the instant granules.
What is seven-spice mixture?
Seven-spice, or shichimi togarashi, is a Japanese spice blend made with chili pepper, orange peel, sesame seeds, and other seasonings. It adds a spicy, citrusy kick when sprinkled on soups and noodles.
PrintUdon Soup Recipe
A comforting and flavorful Udon Soup featuring tender udon noodles in a savory dashi-based broth, enhanced with a balanced blend of soy sauces, mirin, and subtle sweetness. Topped with fresh green onions and optional seven-spice for a hint of warmth and spice, this traditional Japanese soup is quick to prepare and perfect for a satisfying meal.
- Prep Time: 10 minutes
- Cook Time: 15 minutes
- Total Time: 25 minutes
- Yield: 4 servings 1x
- Category: Soup
- Method: Stovetop
- Cuisine: Japanese
Ingredients
Broth Ingredients
- 5 cups water
- 5 teaspoons instant dashi granules
- 2 tablespoons dark soy sauce
- 2 tablespoons light soy sauce
- 1 tablespoon sugar
- 2 tablespoons mirin
Noodles and Garnishes
- 1 pound dried udon noodles
- 1/4 cup green onions, thinly sliced
- Seven-spice mixture (optional)
Instructions
- Cook Noodles: Prepare the udon noodles as per the package instructions. Once cooked, drain the noodles and rinse them under cold water to remove excess starch and prevent sticking. Set the noodles aside.
- Prepare Broth: In a large pot, bring 5 cups of water to a boil. Add the instant dashi granules, dark soy sauce, light soy sauce, sugar, and mirin. Stir well and reduce heat to a simmer. Continue to cook until the sugar and dashi granules are fully dissolved, creating a fragrant and savory broth.
- Assemble and Serve: Divide the cooked udon noodles evenly into four serving bowls. Pour the hot broth over the noodles. Garnish each bowl with thinly sliced green onions and, if desired, a sprinkle of seven-spice mixture for added flavor and spice. Serve immediately to enjoy the soup at its best.
Notes
- Rinsing the noodles under cold water after cooking prevents them from becoming overly soft and sticky.
- Adjust the soy sauce to your preferred saltiness and taste.
- Seven-spice mixture is optional but adds a pleasant spicy kick; it typically includes chili pepper, sesame seeds, and other spices.
- For a richer broth, you can add kombu (kelp) or dried shiitake mushrooms while simmering.
- This soup is best enjoyed fresh but can be stored separately in the refrigerator for up to two days.
Keywords: Udon soup, Japanese noodles, dashi broth, savory noodle soup, quick Japanese recipe, instant dashi soup, udon noodle soup

