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Lunch / Chili Oil Udon: The Ultimate Guide to Spicy Noodle Perfection

Chili Oil Udon: The Ultimate Guide to Spicy Noodle Perfection

June 12, 2025 by JannaLunch

Chili Oil Udon: Prepare to embark on a flavor journey that will tantalize your taste buds and leave you craving more! This isn’t just another noodle dish; it’s an explosion of umami, spice, and satisfying textures that comes together in a surprisingly simple and quick recipe. Have you ever wondered how to elevate your weeknight meals from ordinary to extraordinary with minimal effort? Well, look no further!

Udon noodles, thick and chewy, have been a staple in Japanese cuisine for centuries, enjoyed in countless variations from comforting broths to vibrant stir-fries. While the exact origins of combining udon with chili oil are somewhat modern and less steeped in ancient tradition, the fusion reflects a beautiful evolution of culinary creativity. It speaks to the way cultures borrow and adapt flavors, creating something entirely new and exciting.

What makes chili oil udon so irresistible? It’s the perfect balance of savory, spicy, and slightly sweet notes. The slippery, satisfying texture of the udon noodles coated in the rich, aromatic chili oil is simply divine. People adore this dish because it’s incredibly versatile – easily customizable with your favorite vegetables, proteins, and toppings. Plus, it’s ready in under 20 minutes, making it an ideal option for busy weeknights when you need a delicious and satisfying meal without spending hours in the kitchen. Get ready to experience a symphony of flavors with this easy and delicious recipe!

Chili Oil Udon this Recipe

Ingredients:

  • For the Udon:
    • 2 packages (about 8 oz each) pre-cooked udon noodles
    • 1 tablespoon sesame oil
  • For the Chili Oil:
    • 1 cup neutral oil (such as canola, vegetable, or peanut oil)
    • 1/4 cup red pepper flakes (adjust to your spice preference)
    • 2 tablespoons Sichuan peppercorns
    • 4 cloves garlic, minced
    • 2 shallots, thinly sliced
    • 1-inch piece of ginger, peeled and minced
    • 1 star anise
    • 1 cinnamon stick (about 2 inches)
    • 1 bay leaf
    • 1 tablespoon soy sauce
    • 1 teaspoon sugar
    • 1/2 teaspoon salt
  • For the Sauce:
    • 2 tablespoons soy sauce
    • 1 tablespoon black vinegar (or rice vinegar)
    • 1 tablespoon sesame oil
    • 1 teaspoon sugar
    • 1/2 teaspoon ground white pepper
  • Toppings (Optional):
    • 2 scallions, thinly sliced
    • 1/4 cup roasted peanuts, chopped
    • 1/4 cup cilantro, chopped
    • Sesame seeds
    • Soft boiled egg, halved

Preparing the Chili Oil:

Okay, let’s get started with the star of the show – the chili oil! This is what’s going to give our udon that amazing flavor and kick. Don’t be intimidated by the number of ingredients; it’s actually quite simple.

  1. Infuse the Oil: In a medium saucepan, combine the neutral oil, red pepper flakes, Sichuan peppercorns, minced garlic, sliced shallots, minced ginger, star anise, cinnamon stick, and bay leaf.
  2. Slowly Heat: Place the saucepan over medium-low heat. The key here is to go slow and low. We want to gently infuse the oil with all those wonderful flavors without burning anything.
  3. Monitor the Garlic and Shallots: Keep a close eye on the garlic and shallots. They should sizzle gently and turn a beautiful golden brown. This process will take about 20-30 minutes. The aroma should be incredible!
  4. Strain the Oil: Once the garlic and shallots are golden brown and the oil is deeply infused, carefully remove the saucepan from the heat. Let it cool slightly for a few minutes. Then, using a fine-mesh sieve lined with cheesecloth (if you have it, otherwise just the sieve is fine), strain the oil into a heatproof bowl or jar. This will separate the flavorful oil from the solids.
  5. Season the Oil: While the oil is still warm, stir in the soy sauce, sugar, and salt. This will add depth and balance to the chili oil.
  6. Let it Cool: Allow the chili oil to cool completely before using or storing. The flavors will continue to meld and deepen as it sits. You can store it in an airtight container at room temperature for up to a month. The solids left in the sieve are also delicious! You can sprinkle them on rice, noodles, or even eggs.

Preparing the Sauce:

While the chili oil is cooling, let’s whip up the sauce that will coat our udon noodles. This sauce is a perfect balance of savory, tangy, and slightly sweet.

  1. Combine Ingredients: In a small bowl, whisk together the soy sauce, black vinegar (or rice vinegar), sesame oil, sugar, and ground white pepper.
  2. Taste and Adjust: Give the sauce a taste and adjust the ingredients to your liking. If you prefer a sweeter sauce, add a little more sugar. If you want more tang, add a touch more vinegar.
  3. Set Aside: Set the sauce aside until you’re ready to assemble the udon.

Cooking the Udon Noodles:

Now, let’s get those udon noodles ready! Pre-cooked udon noodles are super convenient and quick to prepare.

  1. Loosen the Noodles: Gently loosen the udon noodles with your hands. They often come stuck together in a block.
  2. Cook the Noodles: There are a few ways to cook the udon noodles:
    • Microwave: The easiest method is to microwave the noodles according to the package instructions. Usually, it involves adding a tablespoon or two of water to the package and microwaving for 1-2 minutes.
    • Boiling Water: Alternatively, you can cook the noodles in boiling water for about 1-2 minutes, or until they are heated through. Be careful not to overcook them, as they can become mushy.
    • Pan-Fry: For a slightly different texture, you can pan-fry the noodles. Heat a tablespoon of sesame oil in a large skillet or wok over medium heat. Add the noodles and stir-fry for 2-3 minutes, or until they are heated through and slightly browned.
  3. Drain the Noodles: If you cooked the noodles in boiling water, drain them well.
  4. Toss with Sesame Oil: Toss the cooked udon noodles with 1 tablespoon of sesame oil. This will prevent them from sticking together and add a nice nutty flavor.

Assembling the Chili Oil Udon:

Alright, we’re in the home stretch! Now it’s time to bring everything together and create our delicious chili oil udon.

  1. Combine Noodles and Sauce: In a large bowl, combine the cooked udon noodles with the prepared sauce. Toss well to coat the noodles evenly.
  2. Add Chili Oil: Add the chili oil to the noodles, starting with a tablespoon or two. Taste and add more to your liking, depending on your spice preference. Remember, you can always add more, but you can’t take it away!
  3. Add Toppings: Now for the fun part – adding the toppings! Sprinkle the sliced scallions, chopped roasted peanuts, and chopped cilantro over the noodles.
  4. Serve Immediately: Serve the chili oil udon immediately. You can also add a soft-boiled egg, halved, for extra richness and protein. A sprinkle of sesame seeds adds a nice finishing touch.
  5. Enjoy! Dig in and enjoy your homemade chili oil udon! The combination of the chewy noodles, savory sauce, spicy chili oil, and fresh toppings is simply irresistible.
Tips and Variations:
  • Spice Level: Adjust the amount of red pepper flakes in the chili oil to control the spice level. For a milder chili oil, use less red pepper flakes or remove the seeds. For a spicier chili oil, use more red pepper flakes or add a pinch of cayenne pepper.
  • Protein: Add some protein to your chili oil udon by topping it with grilled chicken, shrimp, tofu, or a fried egg.
  • Vegetables: Add some vegetables to your chili oil udon by stir-frying some bok choy, spinach, or mushrooms and adding them to the noodles.
  • Noodle Type: While this recipe is specifically for udon noodles, you can also use other types of noodles, such as ramen, soba, or even spaghetti.
  • Make it Vegan: To make this recipe vegan, use a vegan soy sauce and omit the egg topping.
  • Chili Oil Variations: Feel free to experiment with different spices and aromatics in your chili oil. You can add dried chilies, black peppercorns, or even dried shrimp for extra flavor.

Chili Oil Udon

Conclusion:

This Chili Oil Udon isn’t just another noodle dish; it’s a flavor explosion waiting to happen, and trust me, you absolutely need to experience it. The combination of chewy udon noodles, the savory sauce, and that incredible kick from the homemade chili oil is simply irresistible. It’s quick, it’s easy, and it’s guaranteed to become a weeknight staple in your kitchen.

But why is this recipe a must-try? Beyond the sheer deliciousness, it’s incredibly versatile. You can easily adapt it to your own preferences and dietary needs. Feeling extra hungry? Add some grilled chicken, shrimp, or tofu for a protein boost. Want to load up on veggies? Sauté some bell peppers, mushrooms, or spinach and toss them in. The possibilities are truly endless!

Serving Suggestions and Variations:

For a complete meal, I love serving this Chili Oil Udon with a side of steamed edamame or a simple cucumber salad. The freshness of these sides perfectly complements the richness of the noodles. If you’re looking to impress guests, try garnishing with some toasted sesame seeds, chopped scallions, and a sprinkle of nori seaweed flakes. It adds a touch of elegance and enhances the overall presentation.

And speaking of variations, don’t be afraid to experiment with different types of noodles. While udon is my personal favorite, soba or ramen noodles would also work beautifully. You can also adjust the level of spiciness to your liking. If you’re not a fan of intense heat, simply reduce the amount of chili flakes in the oil. Conversely, if you’re a spice enthusiast like me, feel free to add even more! A dash of sriracha or gochujang can also take the heat to the next level.

Another fun variation is to add a poached egg on top. The runny yolk creates a creamy sauce that coats the noodles and adds an extra layer of richness. It’s a simple addition that makes a big difference. You could also try adding a squeeze of lime juice for a burst of acidity that brightens up the flavors.

Time to Get Cooking!

I’m so confident that you’ll love this Chili Oil Udon recipe. It’s the perfect balance of savory, spicy, and satisfying, and it’s incredibly easy to make. So, what are you waiting for? Gather your ingredients, put on your apron, and get ready to create a culinary masterpiece.

I truly believe that cooking should be fun and accessible to everyone, and this recipe embodies that philosophy. It’s a simple yet flavorful dish that anyone can make, regardless of their cooking experience. And the best part is, you can customize it to your own liking, making it a truly unique and personal creation.

Share Your Experience!

Once you’ve tried this recipe, I would absolutely love to hear about your experience. Did you make any modifications? What were your favorite toppings? Did you enjoy the chili oil udon as much as I do? Share your photos and comments on social media using [Your Hashtag Here] so I can see your creations! Your feedback is invaluable, and it helps me to continue creating recipes that you’ll love.

Happy cooking, and I can’t wait to see what you come up with! I hope this recipe brings you as much joy and satisfaction as it has brought me. Enjoy!


Chili Oil Udon: The Ultimate Guide to Spicy Noodle Perfection

Spicy and savory Chili Oil Udon Noodles! Chewy udon noodles tossed in a flavorful sauce and topped with homemade chili oil, scallions, peanuts, and cilantro. Quick, easy, and customizable!

Prep Time20 minutes
Cook Time30 minutes
Total Time50 minutes
Category: Lunch
Yield: 2 servings
Save This Recipe

Ingredients

  • 2 packages (about 8 oz each) pre-cooked udon noodles
  • 1 tablespoon sesame oil
  • 1 cup neutral oil (such as canola, vegetable, or peanut oil)
  • 1/4 cup red pepper flakes (adjust to your spice preference)
  • 2 tablespoons Sichuan peppercorns
  • 4 cloves garlic, minced
  • 2 shallots, thinly sliced
  • 1-inch piece of ginger, peeled and minced
  • 1 star anise
  • 1 cinnamon stick (about 2 inches)
  • 1 bay leaf
  • 1 tablespoon soy sauce
  • 1 teaspoon sugar
  • 1/2 teaspoon salt
  • 2 tablespoons soy sauce
  • 1 tablespoon black vinegar (or rice vinegar)
  • 1 tablespoon sesame oil
  • 1 teaspoon sugar
  • 1/2 teaspoon ground white pepper
  • 2 scallions, thinly sliced
  • 1/4 cup roasted peanuts, chopped
  • 1/4 cup cilantro, chopped
  • Sesame seeds
  • Soft boiled egg, halved

Instructions

  1. Prepare the Chili Oil: In a medium saucepan, combine the neutral oil, red pepper flakes, Sichuan peppercorns, minced garlic, sliced shallots, minced ginger, star anise, cinnamon stick, and bay leaf.
  2. Place the saucepan over medium-low heat. Gently infuse the oil with the flavors, monitoring the garlic and shallots. They should sizzle gently and turn a beautiful golden brown (about 20-30 minutes).
  3. Carefully remove the saucepan from the heat. Let it cool slightly for a few minutes. Then, using a fine-mesh sieve, strain the oil into a heatproof bowl or jar.
  4. While the oil is still warm, stir in the soy sauce, sugar, and salt.
  5. Allow the chili oil to cool completely before using or storing. Store in an airtight container at room temperature for up to a month.
  6. Prepare the Sauce: In a small bowl, whisk together the soy sauce, black vinegar (or rice vinegar), sesame oil, sugar, and ground white pepper.
  7. Taste and adjust the ingredients to your liking. Set the sauce aside.
  8. Cook the Udon Noodles: Gently loosen the udon noodles with your hands.
  9. Cook the noodles using your preferred method: microwave according to package instructions, boil in water for 1-2 minutes, or pan-fry with sesame oil for 2-3 minutes.
  10. Drain the noodles well if boiled.
  11. Toss the cooked udon noodles with 1 tablespoon of sesame oil.
  12. Assemble the Chili Oil Udon: In a large bowl, combine the cooked udon noodles with the prepared sauce. Toss well to coat the noodles evenly.
  13. Add the chili oil to the noodles, starting with a tablespoon or two. Taste and add more to your liking.
  14. Sprinkle the sliced scallions, chopped roasted peanuts, and chopped cilantro over the noodles.
  15. Serve immediately. You can also add a soft-boiled egg, halved, and a sprinkle of sesame seeds.

Notes

  • Spice Level: Adjust the amount of red pepper flakes in the chili oil to control the spice level.
  • Protein: Add some protein to your chili oil udon by topping it with grilled chicken, shrimp, tofu, or a fried egg.
  • Vegetables: Add some vegetables to your chili oil udon by stir-frying some bok choy, spinach, or mushrooms and adding them to the noodles.
  • Noodle Type: While this recipe is specifically for udon noodles, you can also use other types of noodles, such as ramen, soba, or even spaghetti.
  • Make it Vegan: To make this recipe vegan, use a vegan soy sauce and omit the egg topping.
  • Chili Oil Variations: Feel free to experiment with different spices and aromatics in your chili oil. You can add dried chilies, black peppercorns, or even dried shrimp for extra flavor.

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