
Unagi, or freshwater eel, is a popular dish in Japanese cuisine, often served as unagi kabayaki (eel grilled with a sweet soy sauce glaze). Cooking unagi in an air fryer is a convenient way to prepare this dish at home. The process involves preheating the air fryer, placing the unagi with the skin facing down, and setting the temperature and timing accordingly. The cooked unagi can then be served with rice and drizzled with unagi sauce. Pre-marinated frozen unagi is also available, which can be cooked in an air fryer by following similar steps.
How to cook Unagi in an Air Fryer
| Characteristics | Values |
|---|---|
| Temperature | 180-200°C |
| Timing | 6-10 mins |
| Pre-marinated | Yes, with kabayaki sauce or soy sauce |
| Skin side | Face down |
| Drizzle | Unagi sauce |
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What You'll Learn

Preheat the air fryer
Preheating your air fryer is a crucial step in the cooking process. It ensures that your unagi, or eel, is cooked evenly and efficiently. Here is a detailed guide on how to preheat your air fryer for cooking unagi:
Firstly, locate the preheat setting on your air fryer. Most modern air fryers have a preheat function, which is usually indicated by a symbol or a button. If your air fryer does not have a designated preheat setting, you can manually preheat it by setting the temperature to 400°F. This temperature is high enough to ensure that your air fryer is adequately preheated for cooking.
When preheating, it is important to ensure that your air fryer is empty. Do not place any food items inside during the preheating process, as this can lead to uneven cooking or even damage to your air fryer. Wait for the air fryer to reach the desired temperature, which is typically indicated by a light or a beep, depending on your model.
The preheating time can vary depending on the model and brand of your air fryer. Newer models may preheat faster due to more efficient heating elements. As a general rule, allow for at least 3-5 minutes of preheating time. If you are unsure whether your air fryer has reached the desired temperature, you can use an oven thermometer to check. Place the thermometer inside the air fryer basket and wait for the temperature reading to stabilize.
Once your air fryer has preheated to the desired temperature, you can carefully place your unagi inside. It is important to note that the cooking temperature for unagi is typically lower than the preheat temperature. Adjust the temperature according to your recipe, such as 180 degrees Celsius as suggested by one source for cooking pre-marinated unagi fillets. Always refer to your recipe or user manual for specific temperature settings and cooking times.
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Place unagi skin-down
When you're ready to cook the unagi in your air fryer, place the unagi with the skin facing down. This will ensure that the skin gets crispy while the flesh cooks through. Set the heat to 200°C and the timer for 6-7 minutes.
If your unagi is frozen, it's best to defrost it before placing it in the air fryer. However, if you're short on time, you can air-fry frozen unagi; just increase the cooking time accordingly. For a single fillet, six to seven minutes in the air fryer should be sufficient. If you're cooking multiple fillets, you may need to increase the cooking time by a few minutes to ensure even cooking.
When placing the unagi in the air fryer, make sure there is a little space between each fillet to allow for even cooking. If you're cooking a large batch, you may need to cook the unagi in shifts to ensure that each piece turns out perfectly.
Once the unagi is cooked, you'll plate it and drizzle the sauce on top. The crispy skin will add a delightful texture to your dish, and the sauce will enhance the flavour. Serve the unagi with rice for a complete meal.
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Set the temperature
When it comes to setting the temperature for cooking unagi in an air fryer, there are a few different approaches you can take depending on the level of doneness you prefer and the specific model of your air fryer. Here is a step-by-step guide to help you set the ideal temperature:
Step 1: Understand the Doneness Preferences
Before setting the temperature, it's important to know that different people have different preferences for the doneness of their unagi. Some like it fully cooked, while others prefer it slightly undercooked or rare. Understanding your desired level of doneness will help you set the appropriate temperature.
Step 2: Preheat the Air Fryer
To ensure even cooking, it's recommended to preheat your air fryer. Most air fryers have a preheat setting, so you can use that. Alternatively, you can manually set the temperature to around 400°F (200°C) as a starting point. This initial high temperature will help create a crispy exterior while keeping the inside moist and juicy.
Step 3: Adjust Temperature for Cooking
Once the air fryer is preheated, it's time to adjust the temperature for cooking the unagi. Place the unagi with the skin facing down in the air fryer. If you prefer your unagi well-done, set the temperature to 200°C and cook for 6-7 minutes. This will ensure that the unagi is cooked through while remaining moist.
However, if you prefer your unagi slightly undercooked or rare, you can reduce the temperature to 180 degrees Celsius and increase the cooking time to 10 minutes. This will give you a more tender and moist texture, but ensure that the internal temperature of the unagi reaches a safe level for consumption.
Step 4: Monitor the Cooking Process
During the cooking process, it's important to keep an eye on your unagi. Depending on the thickness of the fillet and the exact temperature settings of your air fryer, the cooking time may vary. To ensure your unagi is cooked to your desired doneness, consider using a meat thermometer to check the internal temperature. The U.S. Food and Drug Administration (FDA) recommends a minimum internal temperature of 145°F (62.8°C) for seafood, including eel, followed by a 3-minute rest time.
Step 5: Rest and Serve
After air frying, let the unagi rest for a few minutes before serving. This allows the juices to redistribute and ensures a moist and tender texture. Plate the unagi on top of rice and drizzle with delicious unagi sauce. You can also add some green onions or furikake seasoning for extra flavor and presentation.
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Set the timer
When it comes to setting the timer for cooking unagi in an air fryer, there are a few things to consider for optimal cooking. Firstly, the temperature setting is crucial. If you are cooking frozen unagi, set the temperature to 200°C and cook for 6-7 minutes. This temperature and timing combination will ensure that your unagi is cooked thoroughly and evenly.
For pre-marinated unagi fillets, a lower temperature of 180 degrees Celsius is recommended. Set the timer for 10 minutes to allow the unagi to cook through without drying out. This timing ensures that the fillets are cooked just right and remain moist and tender.
If you're looking for a quick and easy method to cook unagi, consider the following: start by preheating your air fryer to 220 degrees Celsius. Place the unagi fillets in the air fryer and set the timer for 8-10 minutes. This high-temperature, shorter cooking time method will give your unagi a nice char while keeping it moist and flavorful.
Additionally, if you prefer your unagi with a stronger charred flavor, you can finish it off on a grill pan. After air frying, simply place the unagi on a preheated grill pan over medium heat for 3-4 minutes. This extra step will add a delicious charred flavor to your unagi and give it a unique, crispy texture.
In summary, the timing and temperature settings for cooking unagi in an air fryer depend on the initial state of the unagi and your desired level of doneness. By following these guidelines, you can ensure that your unagi is cooked to perfection, whether you prefer it lightly cooked or with a stronger charred flavor.
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Plate and serve
When your unagi is cooked, it's time to plate and serve. Place your cooked rice on a plate or in a bowl, drizzling unagi sauce on top. You can then place the cooked unagi on top of the rice and finish by drizzling any leftover sauce over the unagi.
If you are serving the unagi with salmon, sprinkle furikake over the salmon and scatter green onions on top. This can be served hot, warm, at room temperature, or cold.
If you want to add a char to your unagi, you can broil it in the oven at 220 degrees for 8-10 minutes, or grill it on a pan over medium heat for 3-4 minutes. You will know it is ready when the oil starts to bubble up.
Unagi sauce can be purchased at a grocery store in the sushi supplies section, at a local Asian market, or online.
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Frequently asked questions
The best temperature to cook unagi in an air fryer is between 180°C and 200°C.
It takes around 6 to 10 minutes to cook unagi in an air fryer.
Place the unagi with the skin facing down. If your unagi is pre-marinated, there is no need to add any extra sauce.









































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