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Home » Recipes » Noodle

Wafu Pasta (Japanese-Style Spaghetti)

Published: Sep 6, 2024 | Modified: Jun 21, 2025 By Ryo Hikita | Leave a Comment

If you are looking for a Japanese pasta recipe, Wafu Pasta is definitely worth trying. Its unique flavor, created by combining butter, soy sauce, and mushrooms, is sure to captivate you.

↓ Step-by-Step Recipe  

Wafu Pasta (Japanesem mushroom and butter soy sauce spaghetti)
Jump to:
  • What is Wafu Pasta?
  • The role of mushrooms
  • Topping options
  • Varieties of wafu pasta
  • 📋Step-by-step recipe
  • Tips on how to make
  • Recipe card

What is Wafu Pasta?

Wafu Pasta refers to pasta dishes made with Japanese ingredients and seasonings. "Wafu" means Japanese-style, and there is no specific flavor profile associated with it. In other words, the seasoning can vary widely. Soy sauce, mentsuyu (Japanese noodle soup base), and dashi stock are commonly used as seasonings, and mushrooms and vegetables familiar to Japanese people are often added as ingredients. As long as a dish includes pasta and some of these elements, it can be considered wafu pasta.

Among the various types of wafu pasta, one of the most popular in Japan is pasta made with butter, soy sauce, and mushrooms. This combination is well-known in Japan and is an easy way to create a Japanese flavor. It is one of the dishes many Japanese people think of when they hear the term 'wafu pasta.' I encourage you to try it with this recipe.

Wafu Pasta (Japanesem mushroom and butter soy sauce spaghetti)

The role of mushrooms

One of the most common ingredients used in wafu pasta is mushrooms.

Mushrooms have been a staple in Japanese cuisine for a long time, and they are rich in the umami component known as glutamic acid. This umami pairs well with Japanese seasonings such as soy sauce, miso, and dashi, adding depth to the dish. Typical Japanese mushrooms include the following:

  • Shimeji
  • Shiitake
  • Maitake
  • Enoki
  • Matsutake

Among these, shimeji mushrooms are the most popular choice for wafu pasta. They are rich in umami, and their crunchiness adds texture. While you can make this dish with other types of mushrooms or even omit them, I highly recommend using shimeji if possible. They will add a distinct flavor and texture, making your wafu pasta even more delicious.

Wafu Pasta (Japanesem mushroom and butter soy sauce spaghetti)

Topping options

Various toppings can be added to this dish. Common ingredients include green onions (scallions), nori seaweed, and shiso leaves (perilla), which add color and flavor to the dish. While the recipe calls for green onions, you can use other toppings to suit your taste.

Wafu Pasta (Japanesem mushroom and butter soy sauce spaghetti)

Varieties of wafu pasta

In Japan, there are many unique pasta dishes that have developed independently. All of them can be classified as 'wafu pasta' because they incorporate Japanese elements, but they are usually referred to by their own distinct names. On my blog, I feature the following Japanese pasta dishes:

  • Napolitan (Japanese Ketchup Pasta)
  • Tarako Spaghetti

Each of these dishes has a flavor profile that is quite different from the wafu pasta recipe on this page. If you are looking for Japanese pasta recipes, be sure to give these a try. Each one has its own unique characteristics and is worth trying.

Wafu Pasta (Japanesem mushroom and butter soy sauce spaghetti)

📋Step-by-step recipe

Print Recipe
Recipe Card

Ingredients

Servings: 1

US Customary - Metric
  • 3.5 oz spaghetti
  • 3.5 oz shimeji mushrooms (Other types of mushrooms can also be used.)
  • - 0.35 oz salted butter (for the shimeji mushrooms)
  • - pinch of salt (for the shimeji mushrooms)
  • 1 green onions / scallions
  • ⅓ cup pasta cooking water (prepared in step 2)

Seasonings:

  • 0.35 oz salted butter
  • 2 tsp soy sauce
Prevent your screen from going dark

Instructions

🕒 Total: 15 mins mins
wafu pasta_instruction-1

Step 1
Trim off the base of shimeji mushrooms and separate them into individual pieces. Thinly slice green onion.


wafu pasta_instruction-2

Step 2
Bring a large pot of water to a boil, then add salt (about 1% of the water's volume, not included in the recipe). Cook the spaghetti for about 30 seconds less than the package instructions. In the meantime, proceed with the next step.


wafu pasta_instruction-3

Step 3
Heat butter in a pan over medium heat. Once the butter has melted, add the shimeji mushrooms and sauté until slightly browned. Then, add the pasta cooking water and let it simmer for about 1 minute before turning off the heat.


wafu pasta_instruction-4

Step 4
Once the spaghetti is cooked, drain it in a colander. Add the spaghetti to the pan and cook over medium heat, tossing it with the mixture until only a small amount of liquid remains.


wafu pasta_instruction-5

Step 5
Turn off the heat, add butter and soy sauce to the pan, and let the butter melt with the residual heat while tossing the spaghetti.


wafu pasta_instruction-6

Step 6
Serve on a plate and top with the green onions.


To store

You can store it in the refrigerator for up to 2 days. However, it is best to consume it as soon as possible after cooking to enjoy its optimal texture.

Tips on how to make

  • Cook the spaghetti in a large pot of boiling water. Using too little water can cause the spaghetti to stick together.
  • Butter and soy sauce should be added after turning off the heat. Adding them at this stage helps preserve their flavors.

If you try this recipe, I’d love to hear what you think. Please consider leaving a review and star rating in the comments below. If you enjoyed it, I’d really appreciate it if you shared it with your friends.

Recipe card

Wafu Pasta (Japanesem mushroom and butter soy sauce spaghetti)

Wafu Pasta (Japanese-Style Spaghetti)

If you are looking for a Japanese pasta recipe, Wafu Pasta is definitely worth trying. Its unique flavor, created by combining butter, soy sauce, and mushrooms, is sure to captivate you.
No ratings yet
Print Recipe Pin Recipe
Prep Time: 2 minutes mins
Cook Time: 13 minutes mins
Total Time: 15 minutes mins
Servings: 1

Ingredients
 
 

  • 3.5 oz spaghetti
  • 3.5 oz shimeji mushrooms (Other types of mushrooms can also be used.)
  • - 0.35 oz salted butter (for the shimeji mushrooms)
  • - pinch of salt (for the shimeji mushrooms)
  • 1 green onions / scallions
  • ⅓ cup pasta cooking water (prepared in step 2)

Seasonings:

  • 0.35 oz salted butter
  • 2 tsp soy sauce
Prevent your screen from going dark

Instructions
 

  • Trim off the base of shimeji mushrooms and separate them into individual pieces. Thinly slice green onion.
    wafu pasta_instruction-1
  • Bring a large pot of water to a boil, then add salt (about 1% of the water's volume, not included in the recipe). Cook the spaghetti for about 30 seconds less than the package instructions. In the meantime, proceed with the next step.
    wafu pasta_instruction-2
  • Heat butter in a pan over medium heat. Once the butter has melted, add the shimeji mushrooms and sauté until slightly browned. Then, add the pasta cooking water and let it simmer for about 1 minute before turning off the heat.
    wafu pasta_instruction-3
  • Once the spaghetti is cooked, drain it in a colander. Add the spaghetti to the pan and cook over medium heat, tossing it with the mixture until only a small amount of liquid remains.
    wafu pasta_instruction-4
  • Turn off the heat, add butter and soy sauce to the pan, and let the butter melt with the residual heat while tossing the spaghetti.
    wafu pasta_instruction-5
  • Serve on a plate and top with the green onions.
    wafu pasta_instruction-6

Notes

  • You can store it in the refrigerator for up to 2 days. However, it is best to consume it as soon as possible after cooking to enjoy its optimal texture.

Nutrition

Calories: 544.54kcal Carbohydrates: 79.97g Protein: 17g Fat: 18.13g Saturated Fat: 10.47g Polyunsaturated Fat: 1.18g Monounsaturated Fat: 4.33g Trans Fat: 0.66g Cholesterol: 42.66mg Sodium: 817.46mg Potassium: 614.96mg Fiber: 6.29g Sugar: 4.46g Vitamin A: 615.56IU Vitamin C: 2.26mg Calcium: 37.67mg Iron: 2.26mg
Author: Ryo Hikita (Umami Pot)
Cuisine: Japanese
Category: Main Dishes, Noodle Dishes, Quick
Keyword: butter, pasta, shimeji mushrooms, soy sauce
Enjoyed this recipe?I’d really appreciate it if you shared it with your friends.

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Welcome to Umami Pot!

I'm Ryo, a Japanese culinary expert living in Osaka, Japan. Here, I would like to share with you how to make Japanese dishes actually enjoyed in Japan, from traditional to modern, as clearly, concisely, and deliciously as possible.

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