Eel sauce, also known as unagi sauce, is a sweet and savory condiment often used in Japanese cuisine. It's perfect for drizzling over grilled eel, sushi, or even as a marinade for various dishes. This homemade version allows you to control the sweetness and saltiness to suit your taste.
Some of the ingredients in this recipe might not be staples in your pantry. Mirin is a sweet rice wine that adds a unique flavor and gloss to the sauce. Sake is a Japanese rice wine that enhances the depth of flavor. Both can be found in the Asian section of most supermarkets or specialty stores.

Ingredients for Eel Sauce Recipe
Soy sauce: A salty and savory liquid made from fermented soybeans, essential for the base flavor of the sauce.
Mirin: A sweet rice wine that adds sweetness and a glossy finish to the sauce.
Sugar: Adds sweetness to balance the saltiness of the soy sauce.
Sake: A Japanese rice wine that adds depth and complexity to the sauce.
Technique Tip for This Recipe
When preparing this eel sauce, ensure that you use low-sodium soy sauce if you prefer a less salty flavor. Additionally, when simmering the mixture, keep a close eye on the consistency. The sauce should be thick enough to coat the back of a spoon but not so thick that it becomes syrupy. If it thickens too much, you can always add a splash of water to adjust the consistency.
Suggested Side Dishes
Alternative Ingredients
soy sauce - Substitute with tamari: Tamari is a gluten-free alternative that offers a similar umami flavor profile.
mirin - Substitute with rice vinegar and sugar: Mix ½ cup rice vinegar with 2 tablespoons of sugar to mimic the sweetness and acidity of mirin.
sugar - Substitute with honey: Honey provides a natural sweetness and a slightly different flavor profile that complements the sauce.
sake - Substitute with dry white wine: Dry white wine can replicate the acidity and complexity of sake in the sauce.
Alternative Recipes Similar to This Sauce
How to Store or Freeze This Sauce
- Allow the eel sauce to cool completely at room temperature before storing.
- Transfer the sauce to an airtight container, such as a glass jar or a plastic container with a tight-fitting lid.
- Store the container in the refrigerator. The sauce will keep well for up to two weeks.
- For longer storage, consider freezing the sauce. Pour the cooled sauce into a freezer-safe container or a resealable plastic freezer bag.
- Label the container or bag with the date to keep track of its freshness.
- When ready to use, thaw the frozen eel sauce in the refrigerator overnight.
- Reheat the sauce gently in a saucepan over low heat, stirring occasionally, until it reaches the desired consistency.
- If the sauce has thickened too much after refrigeration or freezing, add a small amount of water or soy sauce to thin it out to your preference.
- Always use a clean spoon or utensil when scooping out the sauce to avoid contamination and extend its shelf life.
How to Reheat Leftovers
Stovetop Method:
- Pour the eel sauce into a small saucepan.
- Heat over low to medium heat, stirring occasionally.
- Once the sauce is warm and has reached the desired consistency, remove from heat and use immediately.
Microwave Method:
- Transfer the eel sauce to a microwave-safe bowl.
- Cover the bowl with a microwave-safe lid or plastic wrap, leaving a small vent.
- Microwave on medium power for 30-second intervals, stirring in between, until the sauce is heated through.
Double Boiler Method:
- Fill a pot with a few inches of water and bring it to a simmer.
- Place a heatproof bowl with the eel sauce over the pot, ensuring the bottom of the bowl does not touch the water.
- Stir the sauce occasionally until it is warmed to your liking.
Oven Method:
- Preheat your oven to 250°F (120°C).
- Pour the eel sauce into an oven-safe dish and cover it with aluminum foil.
- Heat in the oven for about 10-15 minutes, stirring halfway through, until the sauce is warm.
Hot Water Bath Method:
- Place the eel sauce in a heatproof, resealable plastic bag.
- Submerge the bag in a bowl of hot (but not boiling) water.
- Let it sit for about 5-10 minutes, massaging the bag occasionally to ensure even heating.
Essential Tools for Making This Sauce
Saucepan: A medium-sized saucepan is essential for combining and heating the ingredients evenly.
Measuring cups: Use measuring cups to ensure you have the correct amounts of soy sauce, mirin, and sugar.
Measuring spoons: A measuring spoon is needed to measure out the sake accurately.
Wooden spoon: A wooden spoon is ideal for stirring the sauce as it heats, ensuring the sugar dissolves properly.
Stovetop: A stovetop is necessary to bring the mixture to a boil and then simmer it.
Timer: A timer will help you keep track of the 10-minute simmering time.
Heat-resistant spatula: A heat-resistant spatula can be useful for scraping down the sides of the saucepan to prevent sticking.
Cooling rack: Place the saucepan on a cooling rack to let the sauce cool down before using.
Storage container: Once cooled, transfer the sauce to a storage container for easy use and storage.
How to Save Time on This Recipe
Measure ingredients ahead: Pre-measure soy sauce, mirin, sugar, and sake to streamline the cooking process.
Use a non-stick pan: This helps prevent the sauce from sticking and burning, making cleanup easier.
Simmer with a lid: Covering the saucepan can help the sauce thicken faster by trapping heat.
Cool quickly: Pour the eel sauce into a shallow dish to cool it faster, so it’s ready to use sooner.
Eel Sauce Recipe
Ingredients
Main Ingredients
- ½ cup Soy Sauce
- ½ cup Mirin
- ¼ cup Sugar
- 1 tablespoon Sake
Instructions
- Combine soy sauce, mirin, sugar, and sake in a saucepan.
- Bring to a boil over medium heat, stirring constantly.
- Reduce heat and simmer for 10 minutes, or until the sauce thickens.
- Remove from heat and let cool before using.
Nutritional Value
Keywords
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