Onion Miso Soup with Rayu Oil Drizzle
Daily Recipe: September 24, 2025
Onion, often seen as a humble kitchen staple, takes center stage in this Japanese-inspired dish. Our main ingredient, the onion, is sweet and flavorful, a perfect complement to the rich, umami flavors of Soy and Mirin. This is not your ordinary Miso Soup, but a hearty pot with generous helpings of thinly sliced onion, tofu, and seaweed, finished with a spoonful of spicy, garlicky Rayu oil to add an interesting kick.
Ingredients (for 2)
- Large sweet onion - 1 - thinly sliced
- Water - 4 cups
- Miso paste - 3 tablespoons
- Firm tofu - 200g - cut into cubes
- Nori seaweed sheet - 1 - torn into pieces
- Rayu (chili sesame) oil - 2 tablespoons
- Soy sauce - 1 tablespoon
- Mirin - 1 tablespoon
- Vegetable oil - 2 tablespoons
- Salt - to taste
Preparation
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Step 1 - 🥘🌰🔥Heat the vegetable oil in a pot and sauté the thinly sliced onion until it becomes transparent.
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Step 2 - 💧🥘🔥Add 4 cups of water to the pot and bring it to a boil.
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Step 3 - 🥘🍲➡️Lower the heat and dissolve in the miso paste, stir well until it's fully incorporated.
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Step 4 - 🥘🍲🥦Add the cubes of tofu and torn seaweed to the pot, let it cook for another 5 minutes.
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Step 5 - 🥘💦🍚Season the soup with soy sauce, mirin, and salt. Adjust the seasoning according to your taste.
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Step 6 - 🥣🥣🍲Divide the soup into two bowls and drizzle each with a tablespoon of Rayu oil.
Additional
Miso soup is a traditional Japanese soup consisting of a stock called 'dashi' into which softened miso paste is mixed. We've turned this traditional starter into a main course by adding more onions and tofu. But feel free to add other ingredients if you like. Mushrooms, potatoes, or even slices of pumpkin can add more variety. Children can help by tearing the seaweed into pieces.