5 from 3 votes

Servings

Warm up on chilly days with Japanese Sweet Potato Miso Soup! It’s cozy, nourishing, and packed with sweet potatoes, onion, and savory miso flavor.

Looking for sweet potato recipes? Try my Creamy Japanese Sweet Potato Soup, Sweet Potato Tempura, or Crunchy Sweet Potato Fries!

A bowl of Japanese sweet potato miso soup.

Why You Will Love This Recipe

This sweet potato miso soup is quick and easy to make, perfect for a weeknight dinner.
It’s a simple and tasty way to enjoy Japanese sweet potatoes.
Made with plant-based ingredients, it’s great for vegan diets.

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

You’ll need the following ingredients to make this Japanese Sweet Potato Miso Soup:

Ingredients for Japanese sweet potato miso soup.

Japanese Sweet Potatoes: When selecting Japanese sweet potatoes, choose firm, smooth-skinned varieties with no bruises or soft spots. You can find them at Japanese grocery stores, Asian markets, or specialty food stores. Learn more about types of Japanese sweet potatoes here.
Onion: Adds natural sweetness and depth to the soup.
Aburaage: A popular ingredient in miso soup, which adds a pleasant chewy texture and subtle umami flavor.
Miso Paste: is a flavorful, savory, and salty fermented food (soybean paste), an essential seasoning for Japanese cuisine. The darker miso ages longer and tastes less sweet than light-colored miso. White miso paste (shiro miso) is the way to go for a sweet and mild taste.
Dashi: The base of Japanese soups, dashi adds rich umami depth to the broth. In this recipe, I use kombu dashi powder (vegan option). For authentic homemade versions, try awase dashi (bonito flakes), niboshi dashi (anchovies), and kombu dashi.

How To Make Japanese Sweet Potato Soup: STEP BY STEP

Here’s a quick visual guide! Check the recipe card below for the video and full details!

How to make Japanese sweet potato miso soup.

Step 1

Cut sweet potato, onion, and aburaage into bite-sized pieces.

Step 2

Add the cut ingredients, dashi powder, and water to a saucepan and bring it to a boil on medium heat.

Step 3

Lower the heat and simmer until tender.

Step 4

Turn off the heat and stir in miso paste.

Serve in a bowl, and enjoy your hearty miso soup!

Recipe Tips

Always add miso paste after turning off the heat. Boiling the miso will destroy its excellent flavor.
If you find the soup too light, feel free to add more miso paste to enhance the flavor.
It’s easy to add miso paste with a miso measuring whisk.

Storage

Japanese sweet potato miso soup in a glass jar.

Fresh miso soup is always best, but if you have leftovers, let them cool before transferring them to a glass jar and storing them in the fridge. They will stay fresh for 2 to 3 days.

What To Serve With

Pair your miso soup with rice and various side dishes for a Japanese-style meal. I recommend serving it with Japanese Steamed Rice, Vegan Vegetable Gyoza (dumplings), Wakame Seaweed Salad, and Sauteed Shiitake Mushrooms!

Miso Soup Variations

Try these homemade miso soup recipes if you love quick and easy miso soup. They are tasty, easy, and ready in under 10 minutes!

Want more Japanese Plant-Based Ideas?

Get 10 Easy
Vegetarian recipes

Japanese sweet potato miso soup in a saucepan.

More Japanese Sweet Potato Recipes You Will Love

Leave a Rating!

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

Japanese Sweet Potato Miso Soup

5 from 3 votes

Prep: 5

Cook: 3

Total: 8

Servings:

Author: Juri Austin

Warm up on chilly days with Japanese Sweet Potato Miso Soup! It’s cozy, nourishing, and packed with sweet potatoes, onion, and savory miso flavor.

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Japanese sweet potato miso soup in a serving bowl.

Equipment

Medium saucepan
Miso Muddler

Ingredients

Instructions

Preparation: Cut sweet potato, onion, and aburaage into bite-sized pieces.
Bring to a Boil: Put the ingredients, dashi powder, and water in a saucepan and bring to a boil on medium heat.
Simmer: Lower the heat and simmer for three to four minutes.
Add Miso Paste: Turn off the heat, add miso paste (use a miso measuring whisk if you have it), and stir gently until it dissolves.

Notes

Storage: 3 days in the fridge.
Always add miso paste after turning off the heat. Boiling the miso will destroy its excellent flavor.
If you find the soup too light, feel free to add more miso paste to enhance the flavor.
It’s easy to add miso paste with a miso muddler (measuring whisk).
1 cup: 240ml

Video

Nutrition

Serving: 1servingCalories: 106kcalCarbohydrates: 12gProtein: 19g

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

Course: Soup

Cuisine: Japanese

Keyword: Japnaese sweet potato miso soup

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Juri Austin

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

Learn More About Juri

5 from 3 votes (3 ratings without comment)