Curry Udon: 10-Minute Quick & Cozy Japanese Noodles

There’s nothing quite like a steaming bowl of curry udon to warm you from the inside out. This beloved Japanese comfort food combines thick, chewy udon noodles with a rich, savory Japanese curry broth that’s both mildly sweet and deeply flavorful. Whether you’re using leftover curry or making it from scratch, this dish is cozy, filling, and ready in under 10 minutes.

Bonus: Got leftover curry roux? Instead of udon, you can also try making curry onigiri in a rice cooker. A super simple satisfying snack that turns your leftovers into something totally new.

What Is Curry Udon?

Curry udon is a popular Japanese noodle dish that combines thick udon noodles with a savory Japanese curry-flavored broth. The curry is usually made using curry roux blocks, simmered with onions, and meat like thinly sliced beef or pork. The result is a hearty, slightly sweet, and mildly spiced noodle soup.

Unlike traditional Japanese curry served over rice, curry udon is soupier and lighter in consistency, making it a warming, slurp-worthy meal. It’s commonly enjoyed at home and in udon shops, especially during colder months.

Ingredients You’ll Need

• Udon Noodles
  • Frozen udon is ideal for its chewy, bouncy texture. It is close to what you’d find in Japanese restaurants. I like using Shirakiku brand called Sanukiya udon. This can be found in the frozen section of most Japanese grocery stores or Asian stores.
  • Fresh udon (vacuum-sealed packs) are convenient and quick to cook. However, they are not as chewy and bouncy in texture.
  • Dried udon is shelf-stable but you would need to cook it in a separate pot first. It may be slightly less springy than frozen udon.
    • Tip: If using dried noodles, rinse them under cold water after cooking to remove excess starch.
• Thinly sliced beef – I am using thinly sliced beef, however, any choice of protein will work:
  • Thinly sliced beef or pork – cooks quickly and absorbs curry flavor
  • Chicken thigh or breast – for a leaner option
  • Seafood such as shrimp or squid
  • Tofu or mushrooms – for a vegetarian/vegan version
• Japanese Curry Roux
  These are pre-made curry blocks sold in boxes at Asian markets or online. Popular brands include:
  • S&B Golden Curry – well-balanced and a little spicy
  • Vermont Curry – sweeter, mild, kid-friendly
  • Torokeru Curry – smooth, rich texture
    • They come in mild, medium, or hot spice levels. Choose based on your heat preference.
    • Optional: Mix two roux brands for deeper flavor, or make your own curry base using flour, curry powder, and butter.
• Mentsuyu – Japanese soup base with dashi. This adds more umami depth to the soup. You can substitute with instant dashi powder that dissolves in water or kombu dashi for a vegetarian option
• Onion – Thinly sliced yellow or white onion
• Grated garlic for extra aroma

Optional toppings:

• Egg – adds richness
• Green onions/scallions – for a fresh bite
• Shichimi togarashi – a Japanese chili spice mix for heat
• Nori strips or pickled ginger for added umami and brightness

How to Make Curry Udon (Step-by-Step)

Tips for the Best Curry Udon

• Use Frozen Udon for Best Texture
  Frozen udon noodles are pre-cooked and have a chewy, springy texture that holds up well in curry broth.
• Choose a Good Curry Roux
  Brands like Vermont Curry, Golden Curry, or Torokeru Curry offer different levels of sweetness and spice. They’re all solid picks!
• Add mentsuyu for a hint of umami
  Using mentsuyu (Japanese soup base with dashi flavor) instead of just water adds authentic umami depth to the curry sauce.
• Add Meat or Tofu for Protein
  Thinly sliced beef, pork, or pan-fried tofu makes the dish more filling and flavorful.
• Finish with Garnishes
  Top with sliced green onions, a soft-boiled egg, or a sprinkle of shichimi togarashi (Japanese chili pepper) for a spicy kick.
• Serve Immediately
  Curry udon is best served fresh and hot. The noodles can become overly soft if left sitting in the hot curry broth too long.

Variations

1. Leftover Curry Udon
Got leftover Japanese curry from last night? Don’t let it go to waste! Simply reheat it with a bit of dashi or water to loosen the sauce, then pour it over freshly cooked udon noodles. It’s the quickest way to enjoy curry udon and reduces food waste.

2. Vegetarian Curry Udon
Skip the meat and load your curry broth with plant-based ingredients:
Mushrooms (shiitake, enoki, or oyster) for umami
Tofu (fried or soft for protein)
Carrots, potatoes, or spinach for texture and color
Use a vegetarian curry roux (some contain beef/chicken stock) and vegetable broth or kombu dashi as a base.

3. Spicy Curry Udon
If you love heat, boost the spice level by:
Choosing a hot curry roux
Adding shichimi togarashi or rayu (chili oil)
Stirring in grated ginger or a splash of sriracha
This version is especially great in winter or when you’re feeling under the weather.

4. Cold Curry Udon (Reimen Style)
Perfect for summer. The curry sauce is made lighter and chilled, then poured over cold udon noodles. Garnish with cucumbers, tomato slices, and soft-boiled egg. Use a thinner broth to prevent it from feeling heavy in warm weather.

How to Store & Reheat

• Storing Leftovers
  To keep the texture of the noodles and curry sauce at their best, it’s ideal to store the curry broth and udon noodles separately:
  Curry Broth: Let the curry sauce cool completely, then transfer it to an airtight container. Store in the refrigerator for up to 3–4 days.
  Udon Noodles: If you’ve already cooked the noodles, rinse them under cold water to stop cooking, then toss lightly with oil to prevent sticking. Store in a separate container for up to 2 days.
  Tip: If the noodles are mixed with curry already, they’ll soften over time but are still perfectly safe to eat within 1–2 days.
  
  Freezing Option
  The curry broth freezes well for up to 1 month. Let it cool, then store it in a freezer-safe container or resealable bag.
  Do not freeze cooked udon noodles. They’ll lose texture. Instead, freeze extra broth and boil fresh noodles when ready to serve.
  
  Reheating Instructions
  If stored separately:
  Reheat curry broth in a saucepan over medium heat, adding a splash of water or dashi if it’s too thick.
  Boil the udon noodles (if uncooked) or reheat precooked noodles briefly in boiling water for 30–60 seconds to loosen them up.
  Combine in a bowl and serve with fresh toppings.
  If stored together:
  Transfer to a microwave-safe bowl and cover loosely.
  Microwave in 60–90 second intervals, stirring between each round.
  Add a small splash of water before reheating if the sauce has thickened too much.
  Pro Tip: Add fresh green onions, shichimi togarashi, or a soft-boiled egg after reheating to revive the flavor and texture.

FAQs

Can I use leftover Japanese curry for curry udon?

Yes! Leftover Japanese curry makes an excellent base for curry udon. Simply reheat it with a bit of water, dashi, or low-sodium broth to thin it into a pourable soup consistency. This is a great way to repurpose leftovers and enjoy a slightly different meal the next day.

What type of curry roux should I use?

Japanese curry roux blocks are the most convenient option. Popular brands include:

• S&B Golden Curry – more savory and traditional
• Vermont Curry – slightly sweeter and milder
• Torokeru Curry – smooth and rich
  Choose mild, medium, or hot based on your spice tolerance. For an even more customizable flavor, you can mix two types of roux together.

Is curry udon spicy?

Japanese curry is generally mild compared to Indian or Thai curry. Most store-bought roux comes in mild, medium, or hot varieties, so you can choose the heat level you prefer. If you’d like more spice, add a dash of shichimi togarashi, chili oil, or fresh ginger.

Can I make curry udon gluten-free?

Yes, but you’ll need to make some substitutions:

• Use gluten-free curry roux or make your own with curry powder and cornstarch.
• Choose gluten-free udon noodles (often made from rice flour or other grains).
• Check that your soy sauce and dashi (if using) are gluten-free certified.

Can I make this vegetarian or vegan?

Absolutely. Use a vegetarian or vegan curry roux (some contain meat stock), substitute vegetable broth or kombu dashi, and add mushrooms, tofu, or vegetables like carrots and spinach. The flavor will still be rich and satisfying.

What’s the best kind of udon to use?

For the best texture:

• Frozen udon is highly recommended. It’s pre-cooked and becomes perfectly chewy when reheated.
• Fresh udon (sold in vacuum packs) works well too.
• Dried udon is fine in a pinch but may not have the same bounce or thickness.

Can I make curry udon ahead of time?

You can prepare the curry sauce in advance and refrigerate or freeze it. For the best texture, cook the udon noodles just before serving. If you’re meal prepping, store the noodles and sauce separately and combine when ready to eat.