Creamy Japanese Sweet Potato Soup (Vegan)

4.91 from 10 votes
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15 minutes
Servings 4 servings
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This Japanese Sweet Potato Soup has a creamy texture and natural sweetness, making it the perfect choice for a heartwarming meal!

Looking for more Japanese sweet potato dishes? Try my Yaki Imo,  Japanese Sweet Potato Tempura, or Japanese Sweet Potato Miso Soup!

Japanese sweet potato soup served in a bowl.

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I’ll walk you through the ingredients and step-by-step instructions. I hope you enjoy it!

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Why You Will Love This Recipe 

  • It’s easy to prepare with simple ingredients.
  • It’s vegan and gluten-free.
  • No added sugar โ€“ enjoy the natural sweetness.

Japanese Sweet Potatoes

Japanese sweet potatoes, or satsumaimo, have reddish-brown skin and creamy yellow-white flesh. They are typically sweeter, firmer, and starchier than other varieties and hold their shape well during cooking. Their versatility makes them a staple for sweet and savory Japanese dishes.

Recipe Ingredients

Youโ€™ll need the following ingredients to make this Japanese Sweet Potato Soup:

Ingredients for Japanese sweet potato soup.
  • Japanese Sweet Potato determines the sweetness and creaminess of this soup. You can find it in a Japanese grocery store or Asian market.
  • Vegetable Bouillon Powder adds rich flavor and taste. You can substitute it with vegetable broth if you prefer.
  • Soy Milk is my preferred choice. However, you can substitute it with other dairy-free options, such as coconut milk, almond milk, or even heavy cream, to add an extra creamy texture.

How To Make Japanese Sweet Potato Soup: STEP BY STEP 

Here are some quick visual instructions! For the video and all the detailed ingredients and instructions, go to the printable recipe card below.

How to cook sweet potato soup.

Step 1

Peel and cut the sweet potatoe and soak for 5 minutes.

How to cook sweet potato soup.

Step 2

Sautรฉ sliced onions in a saucepan, then simmer with sweet potatoes, vegetable bouillon, and water until tender.

How to cook sweet potato soup.

Step 3

Transfer the soup to a blender container and add soy milk. Blend until smooth and creamy.

How to cook sweet potato soup.

Step 4

Transfer the soup back to the saucepan, warm it up, and season it with salt.

Japanese sweet potato soup served in a bowl.

Serve the sweet potato soup in a bowl and enjoy its warmth and comfort. Add crispy croutons for extra crunch, and sprinkle garlic powder and black pepper for more flavor. For more comforting soups, try my creamy kabocha soup, cream stew, or mushroom soup!

Recipe Tips

  • Japanese sweet potato skins are edible and packed with nutrients like other sweet potato varieties. While I usually cook them with the skins on, I peel them for this soup recipe to achieve a smooth, creamy white color.
  • Soaking sweet potatoes helps remove any bitterness and prevents them from changing or darkening in color.
Vegetarian ebook cover image.

Want More Plant-Based Ideas?

Download 10 Vegetarian Recipes

Japanese sweet potato soup served in a bowl.

More Japanese Sweet Potato Recipes You Will Love

Leave a Rating!

I hope you enjoy this Japanese Sweet Potato Soup! If you try it, don’t forget to leave a rating to share your thoughtsโ€”I love hearing from you!

Japanese Sweet Potato Soup

4.91 from 10 votes
Prep: 5 minutes
Cook: 10 minutes
Total: 15 minutes
Servings: 4 servings
Author: Juri Austin
This Japanese Sweet Potato Soup has a creamy texture and natural sweetness, making it the perfect choice for a heartwarming meal!
Japanese sweet potato soup served in a bowl.
Save the Recipe via Email (Recipe Posts)

Save This Recipe!

Enter your email and Iโ€™ll send this recipe straight to your inbox! Youโ€™ll also get new, simple recipes every week!

Equipment

  • Medium saucepan
  • Blender

Ingredients
  

  • 1 Japanese Sweet Potato, medium size, 180g
  • ยฝ Onion
  • 1 Tbsp Vegetable Oil
  • 1 tsp Vegetable Bouillon Powder, 5g
  • 1ยฝ cups Water
  • 1 cup Soy Milk
  • Salt to taste

Instructions
 

  1. Prepare Vegetables: Slice the onion thinly.ย  Peel and cut the sweet potato into small pieces. Soak the sweet potatoes in water for five minutes, then drain.
  2. Sautรฉ Onion:ย Heat the oil in a saucepan and sautรฉ the sliced onion over low heat until tender.
  3. Simmer:ย Add the sweet potato, water, and bouillon powder to the saucepan. Cover, bring to a boil, then simmer on low heat for 10 minutes or until tender.
  4. Blend: Transfer the soup to a blender, add soy milk, and blend until smooth and creamy.
  5. Finish:ย Return the soup to the saucepan and season with salt. Turn off the heat just before boiling. Serve in a soup bowl, and enjoy!

Video

YouTube video

Notes

  • Storage: Transfer the soup to an airtight container and store it in the refrigerator. It can be stored for 3 to 4 days.
  • Japanese sweet potato skins are edible and packed with nutrients like other sweet potato varieties. While I usually cook them with the skins on, I peel them for this soup recipe to achieve a smooth, creamy white color.
  • Soaking sweet potatoes helps remove any bitterness and prevents them from changing or darkening in color.
  • 1 cup: 240ml

Nutrition

Serving: 1servingCalories: 101kcalCarbohydrates: 12gProtein: 2g

This nutritional information is estimated and provided for general reference only.

Course: Soup
Cuisine: Japanese
Keyword: japanese sweet potato soup

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Juri Austin

Hi! Iโ€™m Juri, founder of Chef JA Cooks and the creator and photographer of this site. Iโ€™m here to guide you in authentic yet easy-to-follow Japanese recipes! Letโ€™s explore the world of Japanese cuisine together!

4.91 from 10 votes (7 ratings without comment)

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6 Comments

  1. 5 stars
    Hi Juri

    I want to thank you for all your amazing recipe, I โค๏ธโค๏ธโค๏ธ them all, forever grateful for you ๐ŸŒบ๐Ÿงธ๐ŸŒบ