An easy Japanese Clear Onion Soup recipe, this light and flavorful soup is just like the one you enjoy at your local Hibachi Steakhouse. With just 9 simple ingredients and a preparation time of only 30 minutes, this soup is perfect for various occasions—from cozy nights in to gatherings with friends and family. Its unique combination of fresh vegetables and aromatic flavors will warm your heart and delight your taste buds.
Why You’ll Love This Recipe
- Quick Preparation: Ready in just 30 minutes, this soup is perfect for busy weeknights.
- Fresh Ingredients: Use wholesome vegetables to create a flavorful broth that feels nourishing.
- Versatile Flavor: Customize the soup with optional soy sauce or sriracha to suit your taste preferences.
- Perfect for Any Occasion: Whether as an appetizer or a light meal, it fits seamlessly into any dining experience.
- Low-Calorie Delight: With only 24 calories per serving, it’s a guilt-free choice that’s both satisfying and delicious.
Tools and Preparation
To prepare Japanese Clear Onion Soup, you’ll need some essential kitchen tools. These will help streamline the cooking process and ensure you achieve the best results.
Essential Tools and Equipment
- Large pot
- Fine-mesh strainer or slotted spoon
- Cutting board
- Chef’s knife
Importance of Each Tool
- Large pot: A spacious pot allows for even cooking and ample space for ingredients to simmer together.
- Fine-mesh strainer: This tool ensures you achieve a clear broth by effectively removing solid vegetable pieces.
- Cutting board: A clean surface for chopping ingredients promotes safety and efficiency in the kitchen.
- Chef’s knife: A sharp knife makes quick work of dicing vegetables, saving you time during prep.

Ingredients
For this delightful Japanese Clear Onion Soup, gather the following ingredients:
For the Broth
- 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 Serving
- 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 Onions
Heat a little oil in a large pot over medium heat. Add the diced onions and cook for about 10 minutes, stirring occasionally until they become soft and slightly caramelized.
Step 2: Add Vegetables
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, then reduce the heat to a simmer. 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, leaving behind a clear broth. 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 Broth
Pour the hot broth over the mushrooms and scallions, allowing them to soften slightly in the heat.
Step 7: Add Optional Flavors
Add a splash of soy sauce for extra depth or sriracha if you prefer a spicy kick. Enjoy your delicious Japanese Clear Onion Soup!
How to Serve Japanese Clear Onion Soup
Japanese Clear Onion Soup is a versatile dish that can be enjoyed in various ways. Here are some serving suggestions to enhance your dining experience.
With Fresh Herbs
- Cilantro or Parsley: Add a sprinkle of fresh herbs for brightness and added flavor.
- Chives: Chopped chives provide a mild onion flavor that complements the soup.
As a Starter
- Appetizer Portion: Serve in small bowls before the main meal to whet the appetite.
- Miniature Cups: Use shot glasses for a fun twist at parties or gatherings.
With Protein Additions
- Grilled Chicken: Top your soup with sliced grilled chicken for added protein.
- Tofu Cubes: For a plant-based option, add soft tofu for creaminess and extra nutrition.
Accompanied by Dipping Sauces
- Soy Sauce: A small dish of soy sauce on the side allows for individual seasoning.
- Sriracha: Serve with sriracha for those who enjoy a spicy kick.
How to Perfect Japanese Clear Onion Soup
To make your Japanese Clear Onion Soup truly remarkable, consider these tips that can elevate the flavors and presentation.
- Boldly caramelize onions: Cook onions until golden brown for deep, rich flavors that enhance the broth.
- Fresh ingredients matter: Use fresh vegetables and herbs for maximum flavor. Avoid wilted produce as it can dull the taste.
- Adjust seasoning wisely: Taste as you go! Adjust salt and pepper according to your preference to bring out all flavors.
- Control simmering time: Do not rush the simmering process; allow at least 30 minutes for flavors to develop fully.
- Strain carefully: Use a fine-mesh strainer to achieve a clear broth, ensuring no solids cloud your soup.
Best Side Dishes for Japanese Clear Onion Soup
Pairing side dishes with Japanese Clear Onion Soup can create a satisfying meal. Here are some delicious options to consider.
- Edamame: Lightly salted edamame provides a healthy, protein-packed snack that complements the soup.
- Vegetable Spring Rolls: Crispy spring rolls filled with veggies offer texture contrast alongside the warm soup.
- Seaweed Salad: A refreshing seaweed salad enhances the meal with its unique umami flavor and crunchy texture.
- Rice Balls (Onigiri): These simple rice balls can be filled with pickled vegetables or tuna, making them a filling addition.
- Nasu Dengaku (Miso Grilled Eggplant): Sweet miso-glazed eggplant brings rich flavors that pair well with the light soup.
- Tempura Vegetables: Lightly battered and fried vegetables provide crunch and delightful taste alongside the broth.
Common Mistakes to Avoid
Making Japanese Clear Onion Soup can be a delightful experience, but there are common pitfalls to watch out for.
- Overcooking the Onions: If you cook the onions too long, they can become too caramelized, which will alter the soup’s clear broth. Aim for soft and translucent onions for the best flavor balance.
- Skipping the Straining Step: Not straining the soup after cooking will leave unwanted vegetable solids in your broth. Always strain to ensure a clear and clean finish.
- Neglecting to Taste: Failing to taste your broth while it simmers may result in a bland soup. Regularly taste and adjust seasoning as needed!
- Using Low-Quality Broth: Using subpar vegetable broth can affect the overall flavor of your Japanese Clear Onion Soup. Choose a high-quality broth for a richer taste.
- Being Inflexible with Ingredients: Sticking strictly to the recipe without considering personal preferences can limit your enjoyment. Feel free to adjust vegetables or add spices for your unique twist.

Storage & Reheating Instructions
Refrigerator Storage
- Store in airtight containers for up to 3 days.
- Let the soup cool completely before refrigerating.
Freezing Japanese Clear Onion Soup
- Freeze in freezer-safe containers or bags for up to 2 months.
- Leave some space at the top of containers as liquid expands when frozen.
Reheating Japanese Clear Onion Soup
- Oven: Preheat to 350°F (175°C) and heat soup in an oven-safe dish until warmed through, about 15-20 minutes.
- Microwave: Heat on high in microwave-safe bowls for 1-2 minutes, stirring halfway through.
- Stovetop: Simmer over medium heat until hot, stirring occasionally.
Frequently Asked Questions
Here are answers to some common questions about making Japanese Clear Onion Soup.
What is Japanese Clear Onion Soup?
Japanese Clear Onion Soup is a light and flavorful broth made primarily with onions, vegetables, and seasonings. It is often served as an appetizer in Japanese restaurants.
How can I customize my Japanese Clear Onion Soup?
You can add various vegetables like bok choy or spinach, or enhance flavors with herbs like cilantro. Tofu or chicken can also be added for extra protein.
Can I make this soup vegan?
Yes! The recipe is naturally vegan as it uses vegetable broth and does not contain any animal products. Just ensure all ingredients are plant-based.
How long does it take to make Japanese Clear Onion Soup?
The total preparation and cooking time is approximately 40 minutes, making it a quick yet satisfying dish.
Final Thoughts
Japanese Clear Onion Soup is not only delicious but also versatile. You can easily customize it with different vegetables or proteins according to your taste preferences. Give this simple recipe a try; it’s perfect for any occasion!
Japanese Clear Onion Soup
Japanese Clear Onion Soup is a delightful, light broth that evokes the comforting flavors of your favorite hibachi steakhouse. With fresh vegetables and aromatic ingredients, this soup is not only quick to prepare—taking just 30 minutes—but it also serves as a versatile dish perfect for any occasion. Whether enjoyed as a starter or a light meal, this clear soup is sure to warm your heart and tantalize your taste buds.
- Prep Time: 10 minutes
- Cook Time: 30 minutes
- Total Time: 40 minutes
- Yield: Serves approximately 6
- Category: Soup
- Method: Simmering
- Cuisine: Japanese
Ingredients
- 6 cups vegetable broth
- 2 cups diced onions
- 1 cup diced celery
- 1 cup diced carrots
- 1 tbsp minced garlic
- ½ tsp minced fresh ginger
- 1 tsp sesame oil
- 1 cup thinly sliced button mushrooms
- ½ cup sliced scallions
- Soy sauce (optional)
- Sriracha (optional)
Instructions
- Sauté the diced onions in a large pot with a bit of oil over medium heat for about 10 minutes until soft and slightly caramelized.
- Add the carrots, celery, garlic, and ginger. Stir in sesame oil and vegetable broth; season with salt and pepper.
- Bring to a boil, then reduce heat and simmer uncovered for 30 minutes.
- Strain the broth using a fine-mesh strainer to remove vegetable solids.
- Place mushrooms and scallions in serving bowls; pour hot broth over them.
- Add soy sauce or sriracha if desired.
Nutrition
- Serving Size: 1 cup (240ml)
- Calories: 24
- Sugar: 3g
- Sodium: 650mg
- Fat: 0g
- Saturated Fat: 0g
- Unsaturated Fat: 0g
- Trans Fat: 0g
- Carbohydrates: 5g
- Fiber: 1g
- Protein: 1g
- Cholesterol: 0mg



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