
Vegetarian Udon Noodle Soup
I love many cuisines from Mexican to Italian to Spanish to good old fashioned American, but if I were really honest with myself I’d have to confess that my absolute favorite is Asian. I say “Asian” because I cannot commit to any particular aspect of the breadth of Asian foods. I’m in love with Indian breads, samosas, and papadum, I salivate over Korean kimchi and bibimbap, and I crave Japanese sushi rolls and inari for weeks at a time – and that’s just scratching the surface.
While I do prepare some Asian foods at home on occasion, I admit that I am still a little wary that I don’t understand how to cook it well enough. That said, I am really fortunate to live so close to multiple Asian markets, and I feel that I am slowly stretching my culinary wings. It’s easy to go into one of these stores, discover an ingredient remembered from a restaurant and have the impulse to buy it and try replicating the dish at home. This is what happened last week as I was wandering down the pasta aisle and came upon some Japanese style udon noodles. As soon as I saw them, I realized that I needed to learn how to make udon noodle soup.
After researching various recipes I have come to realize that udon noodle soup is less about recipe and more about what you have on hand. In many ways, it is very similar to how I am used to throwing together a hearty vegetable soup without wondering if I have added too many or not enough potatoes or carrots, or worrying if I have a specific ingredient on hand or not. It doesn’t really matter, because the end result will still be delicious. What I found is that most udon noodle recipes call for a broth, noodles, some vegetables and mushrooms, and a protein. It’s my opinion that the key is to get the broth down, and then experiment, experiment and experiment. Luckily my first try had me wanting to recreate it the next day, so this recipe I’m sharing with you is a winner in my book.
Vegetarian Udon Noodle Soup
Roughly based upon the Easy Udon Noodle Snack Recipe found on The Messy Vegetarian Cook
Makes 2 servings
- 3 cups water
- 1/2 to 1 cup mushrooms (you can use most any mushroom you like, but I used king oyster and the original recipe calls for shiitake)
- 1 teaspoon ginger
- 2 teaspoons mirin or rice vinegar
- 4 teaspoons tamari, soy sauce or Bragg Liquid Aminos (if you do not have any of these on hand, you may also substitute 2 heaping teaspoons miso)
- 1/2 teaspoon vegan sugar
- 1 sheet nori, cut into small pieces or strips
- 2 dry red chili peppers, optional
- 1/4 cup tofu or another vegetable or wheat protein, optional
- 1/4 cup carrots, julienned
- Dry udon noodles (enough for two servings – this is usually one or two individually separated bunches of noodles)
- Salt
- Sesame oil (optional, but so divine – I highly recommend not skipping this ingredient)
- Green onions or chives (optional)
First prepare your broth. I used about half of a king oyster mushroom, and diced it into bite-sized pieces.

King oyster mushrooms are said to taste similar to abalone
Mince your ginger by first cutting off a small amount from the main part of the root, then peeling away the outer skin. You can also crush it like garlic.

Dicing fresh ginger
Julienne your carrots. “Julienne” just means that you’re cutting your veggie into little strips.

Julienned carrots
Place the water, mushrooms, ginger, carrots, mirin, tamari (or soy sauce or Bragg Liquid Aminos), sugar and nori into the broth. If you are using chili peppers, you can add those in now, too.
Tip: If you are going to use miso as a substitute for the tamari, you will need to add that at the end after the broth has finished cooking.

Dried red chili peppers
If you don’t want your carrots to overcook, add them after the broth has boiled.
Bring your pan of ingredients to boil, stirring occasionally, then turn the heat down to medium low or low.

Udon noodle soup broth
Add in your protein now so it will warm up.

Vegetarian Mock Abalone a.k.a. wheat gluten (and oops - this had MSG in it!)
Allow the broth to steep for about twenty minutes.
If you are using miso, you may add it after the broth has finished cooking and has been removed from the heat. Miso takes a few moments to dissolve, so be sure to stir the broth a few times.

Adding the miso to the broth
Cook the noodles as instructed with a little salt. These cook fast, so be sure you are giving these guys your full attention. Once they are done cooking, drain and rinse under cold water.

Japanese style udon noodles
Once the broth is done, add some noodles to a bowl, then ladle the broth over the noodles.

Almost ready!
Drizzle a small amount of sesame oil over the soup, add some sliced green onions as a garnish.
Tip: Be sure to rinse the green onions really well to get rid of any specks of dirt that may have gotten stuck inside the onion as it was growing.

Sliced green onion
Serve.

So so good!
I loved this soup. It was full of flavor, had tons of texture and really hit the spot. Plus it makes me want to come up more variations. Remember, if you don’t have a particular ingredient on hand, don’t fret – you can experiment and discover your own unique soup, too!
What is your favorite Asian cuisine or dish – or can you even decide?







Codez is actually correct.. most miso does contain bonito.. You can find vegan miso, but to think all miso or even the majority is vegan is a grave mistake. There are only two varieties of Japanese miso that are actually vegan (and even those varieties can have bonito, depending on the brand). I should know, I’m from Japan. ^_^
The way we dissolve the miso in Japan is to dip a strainer down into hot water in the pot, put the miso into the strainer and stir it with a whisk or spoon. This is so much better than putting the miso directly into the pot, or mixing it up in a separate bowl.
I got tired of buying fresh ginger and not using all of it before it either dried up or molded so I peeled it (with a spoon), put it in a freezer bag and it’s in the freezer! When I need it, I’ll just take it out and grate it, still frozen. Works wonderfully well!
is Miso vegetarian at all? Most Miso contains a bonito or fish extract. please clarify !
Miso on its own is actually vegan. Miso soup, on the other hand, can sometimes be hit or miss when it comes to eating out at restaurants. My recommendation would be to ask your server what the soup’s stock is, and if the soup contains bonito. Otherwise, you can make it confidently at home with no worries. If you really are concerned about the miso you buy in the store, always just be sure to check the ingredients.
This sounds very good. I also love Korean po. Want to find a good recipe? I’ll be back! Thanks!
I absolutely loved this soup! I was surprised by how much flavor there was. The only thing I skipped was the ginger (I just didn’t have any on hand) and I used dry miso soup.
Thank you so much!
Glad you liked it! I have been craving it for a few days, so loaded up on some veggies and tofu tonight. Will definitely be making it this week. :)
A couple of tips:
Try peeling the ginger with a spoon. One of the cheap ones from the discount store has a thinner sharper edge and does it perfectly.
Put the miso in a bowl and add a bit of the broth to it. Stir well and then pour it into the pot. It dissolves much more easily.
Happy exploring!
when chopping ginger, I like to use my pampered chef chopper, it is much like the slap chop seen on TV. It chops the ginger very small so you don’t have huge chunks of ginger in your soup. Then it gives good flavor without biting into a chunk of it. plus it is really easy to do and it takes no time at all.
Beautiful step-by-step, and it sounds delicious.
I, like you, am incapable of deciding…I have no favourite anything – too many favourites!