An easy Japanese Clear Onion Soup recipe is perfect for those chilly evenings or when you want a light and healthy meal. This soup captures the essence of traditional Japanese flavors and is reminiscent of the clear broth served at local hibachi steakhouses. With just nine simple ingredients, you can whip up this delightful dish in about 30 minutes, making it an excellent choice for any occasion.
Why You’ll Love This Recipe
- Quick and Easy: This recipe takes only 30 minutes from start to finish, making it perfect for busy weeknights.
- Light and Flavorful: The combination of fresh vegetables and aromatic spices creates a deliciously clear broth that is both satisfying and refreshing.
- Versatile Ingredients: You can customize this soup by adding your favorite vegetables or proteins, making each batch uniquely yours!
- Healthy Option: Low in calories yet packed with nutrients, this soup is an excellent addition to a balanced diet.
- Perfect for Meal Prep: Make a big batch ahead of time and enjoy it throughout the week.
Tools and Preparation
Before diving into the cooking process, gather your essential tools to ensure a smooth preparation.
Essential Tools and Equipment
- Large pot
- Fine-mesh strainer or slotted spoon
- Cutting board
- Chef’s knife
Importance of Each Tool
- Large pot: Essential for cooking the soup, allowing ample space for all ingredients while they simmer.
- Fine-mesh strainer or slotted spoon: Helps separate the clear broth from the vegetables easily without losing flavor.

Ingredients
To make this delightful Japanese Clear Onion Soup, you’ll need:
For the Soup Base
- 6 cups vegetable broth
- 2 cups onions, diced
- 1 cup celery, diced
- 1 cup carrots, peeled and diced
- 1 tbsp garlic, minced
- ½ tsp fresh ginger, minced
- 1 tsp sesame oil
For Garnish
- 1 cup button mushrooms, thinly sliced
- ½ cup scallions, sliced
- Soy sauce (optional)
- Sriracha (optional)
How to Make Japanese Clear Onion Soup
Step 1: Sauté the Onions
Heat a little oil in a large pot over medium heat. Add the diced onions and cook for about 10 minutes until they become soft and slightly caramelized.
Step 2: Add Vegetables and Broth
Stir in the carrots, celery, garlic, and ginger. Pour in the sesame oil and vegetable broth. Season with salt and pepper to taste.
Step 3: Simmer the Broth
Bring the mixture to a boil. Reduce the heat to a simmer and let it cook uncovered for 30 minutes to allow the flavors to develop.
Step 4: Strain the Broth
Use a fine-mesh strainer or slotted spoon to remove the vegetables from the pot. Discard the solids or save them for another use.
Step 5: Prepare Serving Bowls
Place a handful of thinly sliced mushrooms and scallions into serving bowls.
Step 6: Serve Hot
Pour the hot broth over the mushrooms and scallions, allowing them to soften slightly in the heat. If desired, add a splash of soy sauce for extra depth or sriracha for a spicy kick.
Enjoy your homemade Japanese Clear Onion Soup!
How to Serve Japanese Clear Onion Soup
Serving Japanese Clear Onion Soup is an enjoyable experience that can be enhanced with a few thoughtful touches. Here are some delightful serving suggestions to elevate your soup experience.
With Fresh Herbs
- Chopped Cilantro: Add a sprinkle of chopped cilantro for a refreshing flavor.
- Green Onions: A few extra slices of green onions on top add a nice crunch and color.
As a Starter
- Small Bowls: Serve the soup in smaller bowls as an appetizer before a larger meal.
- Accompanying Pickles: Offer some pickled vegetables on the side for added texture and flavor contrast.
Garnished with Proteins
- Tofu Cubes: For added protein, include soft or fried tofu cubes in each bowl.
- Shredded Chicken: Place some shredded cooked chicken on top for a heartier version.
With Side Sauces
- Soy Sauce Drizzle: Provide soy sauce at the table for guests to customize their flavor.
- Sriracha Sauce: A small dish of sriracha allows spice lovers to add their desired heat level.
How to Perfect Japanese Clear Onion Soup
Perfecting your Japanese Clear Onion Soup is all about attention to detail. Here are some tips to help you achieve that perfect bowl every time.
- Use Fresh Vegetables: Fresh ingredients yield the best flavors; avoid using wilted or old produce.
- Adjust Seasoning Gradually: Start with less salt and gradually add more to taste; this prevents over-seasoning.
- Strain Thoroughly: Ensure you strain the broth well for that signature clear soup appearance without any floating solids.
- Experiment with Broths: Feel free to try different vegetable broths for varied flavor profiles; homemade broth often tastes best.
- Serve Hot: Always serve the soup hot to keep it flavorful and inviting; reheat if necessary before serving.
Best Side Dishes for Japanese Clear Onion Soup
Pairing side dishes with your Japanese Clear Onion Soup can enhance your meal significantly. Here are some excellent options.
- Edamame: Lightly salted edamame beans make for a healthy and tasty snack alongside the soup.
- Vegetable Spring Rolls: Crisp spring rolls filled with fresh vegetables add crunch and flavor contrast.
- Seaweed Salad: A tangy seaweed salad provides a fresh, umami-rich bite that complements the soup well.
- Rice Balls (Onigiri): These rice balls can be filled with various ingredients, making them a versatile side option.
- Cucumber Salad: A simple salad of sliced cucumbers dressed in vinegar offers a refreshing palate cleanser.
- Tempura Vegetables: Lightly battered and fried vegetables add a crispy texture that pairs nicely with the smooth soup.
Common Mistakes to Avoid
Making Japanese Clear Onion Soup can be easy, but here are some common mistakes to steer clear of.
- Overcooking the Vegetables: Cooking the vegetables too long can make the broth cloudy. To avoid this, simmer until just tender before straining.
- Ignoring Broth Quality: Using low-quality broth can affect flavor. Always opt for a good vegetable broth for the best taste.
- Skipping Straining: Not straining the soup will leave you with a murky broth. Use a fine-mesh strainer to achieve that clear finish.
- Neglecting Seasoning: Failing to season properly can result in bland soup. Taste and adjust seasoning with salt and pepper before serving.
- Adding Too Many Ingredients: Overloading the soup with extras can overwhelm its delicate flavors. Stick to the recipe for balanced taste.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container for up to 3 days.
- Let the soup cool completely before sealing.
Freezing Japanese Clear Onion Soup
- Freeze in a freezer-safe container for up to 3 months.
- Leave some space at the top of the container for expansion when freezing.
Reheating Japanese Clear Onion Soup
- Oven: Preheat to 350°F (175°C). Place soup in an oven-safe dish covered with foil until heated through.
- Microwave: Use a microwave-safe bowl and heat in 1-minute intervals, stirring in between until hot.
- Stovetop: Pour into a pot and heat over medium until warmed, stirring occasionally.
Frequently Asked Questions
Here are some commonly asked questions about Japanese Clear Onion Soup.
What is Japanese Clear Onion Soup?
Japanese Clear Onion Soup is a light, flavorful broth made primarily from onions and vegetables, often served as an appetizer.
How do I make Japanese Clear Onion Soup vegetarian?
Use high-quality vegetable broth and omit any meat-based ingredients to keep it vegetarian while still delicious.
Can I customize my Japanese Clear Onion Soup?
Absolutely! Feel free to add different vegetables or proteins like chicken or tofu to suit your tastes.
How long does it take to make Japanese Clear Onion Soup?
This recipe takes about 40 minutes from start to finish, including prep and cook time.
What should I serve with Japanese Clear Onion Soup?
It pairs well with sushi, rice dishes, or as a starter before any Asian-inspired meal.
Final Thoughts
Japanese Clear Onion Soup is not just light and refreshing; it’s also versatile enough for customization. Whether you want to enhance it with more vegetables or proteins, this recipe invites creativity. Give it a try and enjoy a comforting bowl of this delightful soup!

Japanese Clear Onion Soup
Japanese Clear Onion Soup is a simple yet satisfying dish that brings warmth and comfort on chilly evenings. This vibrant, light broth showcases the delicate flavors of fresh vegetables complemented by aromatic spices, reminiscent of traditional Japanese cuisine. Perfect as an appetizer or a light meal, this soup can be prepared in just about 30 minutes, making it an excellent choice for busy weeknights or meal prep. Plus, you can customize it with your favorite vegetables or proteins to create a unique blend each time you make it. Dive into this healthy, flavorful soup and enjoy its nourishing qualities!
- Total Time: 40 minutes
- Yield: Serves approximately 6 people 1x
Ingredients
- 6 cups vegetable broth
- 2 cups diced onions
- 1 cup diced celery
- 1 cup diced carrots
- 1 tablespoon minced garlic
- ½ teaspoon minced fresh ginger
- 1 teaspoon sesame oil
- 1 cup thinly sliced button mushrooms (optional)
- ½ cup sliced scallions (optional)
Instructions
- In a large pot over medium heat, sauté the diced onions in a little oil for about 10 minutes until soft and slightly caramelized.
- Add the diced carrots, celery, garlic, and ginger to the pot. Pour in the sesame oil and vegetable broth; season with salt and pepper to taste.
- Bring the mixture to a boil, then reduce heat and simmer uncovered for 30 minutes to develop flavors.
- Strain the broth using a fine-mesh strainer or slotted spoon to remove solids.
- Serve hot by pouring the broth over sliced mushrooms and scallions in individual bowls.
- Prep Time: 10 minutes
- Cook Time: 30 minutes
- Category: Soup
- Method: Simmering
- Cuisine: Japanese
Nutrition
- Serving Size: 1 cup (240g)
- Calories: 70
- Sugar: 5g
- Sodium: 500mg
- Fat: 2g
- Saturated Fat: 0g
- Unsaturated Fat: 2g
- Trans Fat: 0g
- Carbohydrates: 12g
- Fiber: 3g
- Protein: 3g
- Cholesterol: 0mg
Keywords: Feel free to adjust the seasoning based on your preference. For added protein, consider including tofu cubes or shredded cooked chicken. Experiment with different vegetable broths for varied flavor profiles.
