Name: Harusame Japanese Glass Noodle Soup
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Ingredients: 2 ounces harusame (Japanese glass noodles); 4 cups low-sodium chicken or vegetable broth; 1 cup shiitake mushrooms, thinly sliced; 1 small carrot, julienned; 1 cup napa cabbage, thinly sliced; 1 cup baby spinach leaves, lightly packed; 2 tablespoons soy sauce; 1 tablespoon mirin; 1 teaspoon sesame oil; 2 cloves garlic, minced; 1 teaspoon fresh ginger, grated; 2 green onions, thinly sliced; 1 teaspoon rice vinegar; salt and freshly ground black pepper, to taste

Harusame Japanese Glass Noodle Soup Recipe tastes light yet deeply savory, with slippery glass noodles, tender veggies, and a clean broth that comforts without feeling heavy, and it works perfectly for busy weeknights since it takes about 30 minutes from chopping board to table. This bowl suits anyone who loves Japanese flavors but wants something gentler than ramen and lighter than udon. I started making this on chilly New York evenings when I wanted a cozy dinner that still let me feel good about going back for seconds.

Why Make This Harusame Japanese Glass Noodle Soup Recipe at Home

Homemade Harusame Japanese Glass Noodle Soup gives you full control over salt, veggies, and protein, so you can keep it light or load it up. You skip the mystery ingredients and still get that restaurant-style flavor with simple pantry staples.

You also adjust the texture of the glass noodles exactly how you like them, from springy to extra soft. I also love that this recipe uses one pot and minimal chopping, which means less cleanup and more couch time.

“Clean, cozy, and full of flavor, this Harusame Japanese Glass Noodle Soup recipe tastes like something from a tiny Tokyo cafe ★★★★★”

Ingredients You Need

Here is everything you need for a classic, flexible Harusame Japanese Glass Noodle Soup recipe.

Glass noodles

Harusame glass noodles (potato starch or mung bean starch, about 3–4 ounces / 85–115 g)
- I like Japanese brands such as Hikari or Harusame-labeled packs.
- Use Korean dangmyeon or Chinese mung bean vermicelli if you cannot find Japanese harusame.

Broth base

4 cups low-sodium chicken broth
- Use vegetable broth for a vegetarian version.
2 cups water
1 tablespoon hondashi granules (instant dashi stock)
- This adds deep umami quickly; if you skip it, increase soy sauce and add a piece of kombu during simmering.
2–3 tablespoons soy sauce
- Use low-sodium if you watch salt.
1 tablespoon mirin
- If you do not have mirin, use 1 tablespoon sake substitute or 1 teaspoon sugar.
1 teaspoon toasted sesame oil
1 teaspoon sugar (optional, to balance saltiness)
Salt and white pepper to taste

Aromatics and vegetables

1 tablespoon neutral oil (canola, avocado, or light olive oil)
2 cloves garlic, minced
1 teaspoon fresh ginger, minced or grated
3–4 shiitake mushrooms, stems removed, thinly sliced
- Use cremini or button mushrooms if needed.
1 small carrot, julienned or cut into thin matchsticks
1 cup napa cabbage, thinly sliced
- Use green cabbage or bok choy if you prefer.
2 green onions, sliced (white and green parts separated)

Protein options

Pick one or mix a couple:

4–6 ounces thinly sliced chicken thigh or breast
4–6 ounces thinly sliced pork
4–6 ounces firm tofu, cut into small cubes
1 egg, lightly beaten (for egg drop style)
A handful of cooked shrimp, peeled and deveined

Toppings and finishing touches

Extra sliced green onions
Toasted sesame seeds
Chili oil or shichimi togarashi for heat
A squeeze of lime or yuzu juice if you like a citrus kick
Nori strips or furikake for extra umami

Equipment list

Medium to large soup pot or Dutch oven
Small bowl for soaking noodles
Cutting board and sharp knife
Measuring spoons and cups
Ladle and tongs or chopsticks

Tips & Mistakes

Soak the glass noodles in warm water for 10–15 minutes before cooking so they soften evenly and do not clump in the pot.
Cut veggies into thin slices or matchsticks so they cook quickly and stay tender-crisp.
Add delicate veggies like napa cabbage and green onion near the end so they keep color and texture.
Season the broth gradually; taste after soy sauce and dashi, then adjust with salt, sugar, or more soy instead of dumping everything in at once.
Avoid overcooking the noodles; pull them when they still feel slightly firm because they continue to soften in the hot broth.
Keep the heat at a gentle simmer rather than a rolling boil so the broth stays clear and the noodles hold their bite.
If you add egg, drizzle it slowly into gently simmering broth while you stir in circles so it forms pretty ribbons instead of clumps.
Slice meat very thin so it cooks quickly and stays tender; partially freeze it for 20 minutes to make thin slicing easier.
Do not crowd the pot with too many noodles; extra noodles soak up broth and turn the soup into a thick stew.
Taste right before serving and adjust with white pepper, soy sauce, or a tiny splash of sesame oil for a final flavor boost.

How to Make Harusame Japanese Glass Noodle Soup Recipe

Step 1: Soak the glass noodles

Place the harusame glass noodles in a bowl and cover them with warm water. Let them soak for about 10–15 minutes until they turn pliable but still feel slightly firm in the center. Drain them well and set them aside.

Step 2: Prep the vegetables and protein

Slice shiitake mushrooms, carrot, and napa cabbage into thin pieces. Mince garlic and ginger, then slice green onions, keeping white and green parts separate. Slice your protein of choice into thin strips or small cubes so it cooks quickly.

Step 3: Sauté aromatics

Heat the neutral oil in your soup pot over medium heat. Add garlic, ginger, and the white parts of the green onions. Stir and cook for about 30–60 seconds until they smell fragrant and just start to color.

Step 4: Add vegetables and lightly sauté

Add sliced mushrooms and carrot to the pot. Stir and cook for 2–3 minutes until the mushrooms soften slightly and the carrot brightens in color. Add napa cabbage and cook for another minute so it starts to wilt.

Step 5: Build the broth

Pour in chicken broth and water. Stir in hondashi granules, soy sauce, mirin, sesame oil, and sugar if you use it. Bring the mixture to a gentle simmer over medium-high heat, then lower the heat to maintain a steady simmer.

Step 6: Cook the protein

Add your sliced chicken, pork, tofu, or shrimp to the simmering broth. Stir gently so the pieces separate and cook evenly. Simmer until the protein cooks through, which usually takes 3–5 minutes for thin slices.

Step 7: Add the glass noodles

Add the soaked and drained harusame noodles to the pot. Stir to loosen any clumps and submerge them fully in the broth. Simmer for 2–3 minutes until the noodles turn clear and tender but still slightly springy.

Step 8: Optional egg ribbon

If you want egg in your Harusame Japanese Glass Noodle Soup, lower the heat so the broth barely simmers. Stir the soup in a slow circle, then drizzle in the beaten egg in a thin stream while you keep stirring. The egg will set into soft ribbons within about 30 seconds.

Step 9: Final seasoning

Taste the broth and adjust with more soy sauce, a pinch of salt, or a little sugar until the flavor feels balanced. Add white pepper for gentle heat and extra depth. Stir in the green parts of the green onions and a pinch of toasted sesame seeds.

Step 10: Serve

Ladle the Harusame Japanese Glass Noodle Soup into bowls, making sure each bowl gets a good mix of noodles, veggies, and protein. Top with more green onions, sesame seeds, and chili oil or shichimi togarashi if you like spice. Serve hot while the noodles stay bouncy and the broth tastes bright.

Variations I've Tried

I swap chicken broth for a kombu and shiitake-based vegetable broth when I cook for vegetarian friends, and the umami still hits nicely. I also like a miso twist, where I whisk 1–2 tablespoons white miso into a ladle of hot broth, then stir that back into the pot off the heat. On colder nights, I add extra napa cabbage, tofu, and a spoonful of chili crisp for a heartier, spicier Harusame Japanese Glass Noodle Soup.

You can also try a seafood version with shrimp and a few fish balls, which cooks quickly and tastes light yet satisfying. Another favorite uses leftover rotisserie chicken, which I shred and toss in at the end as a shortcut protein.

How to Serve Harusame Japanese Glass Noodle Soup Recipe

Serve Harusame Japanese Glass Noodle Soup steaming hot in deep bowls so the noodles have room to move and soak up broth. I like to set out small toppings like extra green onions, chili oil, sesame seeds, and nori strips so everyone customizes their own bowl. Pair it with a simple cucumber salad, edamame, or a small bowl of steamed rice for a more filling meal. This soup also works nicely as a starter before a bigger Japanese-style dinner with grilled chicken or tofu.

How to store

Cool the Harusame Japanese Glass Noodle Soup to room temperature within 1 hour, then store it in airtight containers in the fridge for up to 3 days.
Keep noodles and broth separate if possible, since noodles keep soaking up liquid and turn very soft; store extra soaked but uncooked noodles in a separate container for 2 days.
Freeze just the broth with veggies and protein for up to 2 months, then add freshly soaked noodles when you reheat.
Reheat on the stove over medium heat until the soup steams and small bubbles appear at the edges, then add the noodles and heat them through gently so they do not turn mushy.