The BEST Udon Soup Recipe (Easy To Make Udon Noodle Soup)

This udon soup recipe is loaded with authentic flavors. It combines fresh udon noodles with a savory udon broth to make an irresistible - and wonderfully simple - soup that everyone is sure to love. Along with being absolutely delicious though, it also happens to be so, so easy to make. In fact, you can have it ready and on the table with only a handful of essential ingredients!

The Best Udon Soup

If you've never had udon soup before, then get ready to have your mind blown. This soup combines two of my favorite things - a savory broth and chewy noodles - to make a super satisfying and flavorful bowl of soup that I just know you're going to love.

I mean, how could you not love thick udon noodles cooked in an umami-rich broth?! The results will speak for themselves, trust me.

In addition to tasting incredible though, this udon soup recipe also happens to be a breeze to put together. The entire noodle soup recipe takes under an hour to make, and pretty much all of it is passive cooking!

That means that while the soup is cooking you can make some equally delicious quick sides to serve along with it - like this potato mochi, moo shu pork, or these Chinese green beans.

Ingredients

For as good as this udon noodle soup is, you'd never guess how simple the ingredient list is. In fact, you might surprise yourself by having everything you need at home waiting for you already!

Anyway, here's exactly what you'll need to make this udon noodle soup recipe:

• 10 grams katsuobushi
• 10 grams kombu
• 17 oz. water
• 2 tbsp. soy sauce
• 3 green onions, sliced
• 1 tbsp. sugar
• 1 tbsp. mirin
• 5 oz. udon noodles
• 1 tsp. shichimi togarashi

See, pretty simple stuff, right?

Also, if you haven't heard of them before, katsuobushi is also known as "bonito flakes," and kombu is a type of seaweed that you can find in the Asian aisle of most grocery stores or at your nearby Asian market.

Ingredient Substitutions And Suggestions

I always make this udon soup with the exact ingredients listed above, but you can easily make some changes to it, depending on what you have at home.

Now, of course, for the broth, I used a combination of bonito flakes and kombu to give it a nice depth of flavor. However, if you're in a pinch - and don't want to run to the store to get either of those things - you can use chicken broth or even miso broth as the base for this udon noodle soup recipe. 

Also, when it comes to incorporating more ingredients, you can add things like shiitake mushrooms, soft-boiled eggs, or even fried tofu, though even without these things, your udon soup is sure to taste incredible.

Lastly, when it comes to the udon noodles, I prefer fresh udon noodles, but you can buy frozen udon noodles - or even try making homemade udon noodles if you prefer. Just keep in mind that using frozen udon noodles or homemade udon noodles might alter the cooking time of the soup slightly, so just keep that in mind.

How To Make Udon Soup

Now onto the fun part, it's time to make the soup! And, honestly, it couldn't be easier to make.

You basically just build your dashi, then cook udon noodles, and top them off with some green onions and chili peppers. Yup, 3 simple steps are all it takes to make it.

Anyway, let's stop wasting time and get into those steps!

Step 1: Make The Udon Broth

First things first, add your water and katsuobushi to a large pot and let it sit for 30 minutes. Then, after 30 minutes, you'll want to bring it to a boil and turn off the heat.

As soon as you turn off the heat, you'll want to add in your kombu and let this mixture sit for another 15 minutes. Then, after 15 minutes is up you can strain out both the katsuobushi and the kombu. This is now your "dashi" and is the base for all sorts of Korean and Japanese soups and ramen.

Step 2: Cook The Udon Noodles

Now that the dashi is made you can bring it to a boil and add in the soy sauce, green onions, sugar, and mirin and stir everything until combined.

Now, when you've got everything well combined, you can add the dried udon noodles to the hot broth and let them cook for about 7-10 minutes - or until the wheat flour noodles reach your desired texture.

Step 3: Assemble And Serve

Once the udon noodles have been fully cooked, you can split the Kake udon into 4 bowls and garnish each with green onions and shichimi.

At this time, you can also add on any other toppings you want, such as fried tofu, soft boiled eggs, or even shrimp tempura. Enjoy!

How To Store Udon Soup

This recipe for udon noodle soup makes 4 servings. So, it really is the perfect soup recipe to make for a family dinner or even to eat as leftovers throughout the week.

Speaking of leftovers, if you end up with some, you can store them in the fridge for up to 5 days.

How To Reheat Udon Soup

When you're ready to dive back into your delicious soup, you'll definitely want to warm it up. After all, nothing's better than eating hot soup!

So, with that said, to reheat your leftover udon soup, I recommend using the stovetop. Simply transfer your leftovers to a saucepan, set it over medium heat, and frequently stir it until it's warm.

Alternatively, if you're just reheating one bowl of soup, you can microwave it in 30-second increments until it is fully warmed - about 2 minutes should do the trick.

Wrapping It Up

Well, that's how to make udon soup at home in just a few simple steps!

Honestly, this udon soup recipe is probably one of my best soup recipes yet. I don't know if it's because of the flavorful dashi or the chewy udon noodles, either way though, it's the perfect soup! It's quickly become a favorite for my family whenever we're craving delicious Japanese food, and we like it better than what we'd get for takeout.

Anyway, I hope you enjoy this udon noodle soup recipe as much as I/we do.

As always, if you give this recipe a try, leave a comment below and tell me how it went.

More Soup Recipes

Did this Kake udon soup recipe get you in the mood to make even more soups. If it did, you're in luck. We have a ton of other delicious soups for you to try next.

Anyway, here are some reader favorites:

• Birria ramen
  
• Korean tofu soup
• Creamy ramen
• Spicy miso ramen
• Beef noodle soup

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