Can you reheat Fish Soup? (+3 Ways to Reheat)

Delicious and nutritious fish soups are the best way to enjoy the winter nights. It is easy to freeze and reheat fish soup once you know the steps to do so.

According to the United States Department of Agriculture, most foods can be frozen, and this includes fish soup.

Can you reheat Fish Soup?

Yes, you can. Fish soups are very flexible foods when it comes to storage and reuse because they can be reheated and boiled without the risk of scorching.

  • You should cool the soup thoroughly before putting it in the fridge or freezer.
  • Pack it in lidded containers or freezer bags. Proper packaging saves freshness and keeps the product from drying out.
  • Reheating may result in quality loss and lead to food poisoning. So, let the soup boil for about 3 minutes to get rid of any harmful bacterial growth.
  • It is recommended to not refreeze the leftovers.
  • The more you cool and reheat the soup, the higher the risk of food poisoning. Bacteria grow exponentially if soups are cooled too slowly or reheated insufficiently.

Refrigerating Fish Soups

Fish soups should be refrigerated no longer than 1 day. Normal foods can be stored in the fridge for up to 4 days, but fish and foods made with fish spoil faster than other foods. So, if you need to store it for any longer periods, you should freeze it in covered airtight containers.


1. Chill it: Properly cool the fish soup for about 1 – 2 hours. Let it sit uncovered for 20 – 30 minutes. Stir now and then to release more heat.

2. Pack it: When the soup has reached room temperature, seal it in containers or freezer bags. Plastic containers with tight-fitting lids prevent leaks and the spreading of smell to the freezer.

Remember to leave the headspace of ½ inch at least so, there is room for expansion.

Bags special for soups and stews are also available. Squeeze out as much air as you can, but do not overfill the bags.

3. Freeze it!

Fish soups can be kept frozen for up to 2 months.


Fish soups can be thawed by the refrigerator, cold water, or microwave. After thawing, the soup should be used within 1 – 2 days.

Refrigerator thawing takes the longest time.

Coldwater thawing is faster than refrigeration but there is a risk of leakage if the package is not leak-proof. It can result in contamination of the soup with bacteria.

Microwave thawing is the fastest method for thawing fish soup.

Simply heat it in the microwave until its temperature reaches 165o F as measured with a food thermometer. The plus point of Microwave thawing is that you can separate the portion of fish soup you want to use and refreeze the rest safely after heating it to this safe temperature.

Reheating the Fish Soup:

There are various methods to reheat fish soups.

  • Microwave


One of the easiest methods to reheat fish soup is using the microwave.

  1. Put the fish soup in a microwave-safe bowl and cover it loosely with a microwave-safe lid.
  2. Heat the soup for 1 – 3 minutes, stopping every 30 seconds to stir quickly. This ensures that the soup is heated evenly.
  3. Keep heating and stirring till the temperature in the center of the soup is at least 165o F.

Stovetop Method:

  1. Pour the soup into a pot with large sides to prevent boiling over the sides.
  2. Add 1.5 cups of water for every quart of soup, particularly if there is pasta or rice in it, or if the soup is frozen.
  3. Heat the fish soup at medium if the soup is not frozen. If it is frozen, heat on low till the soup melts, then turn up the heat to medium.
  4. Keep heating till the soup starts boiling. Boil it for at least 3 minutes. Stir regularly to prevent soup from sticking to the bottom.
  5. Turn the flame off and remove it from the burner.
  6. Check the temperature of the soup using a food thermometer. It should be 165o F, as recommended by USDA.

Instant Pot:

Reheating fish soup in an Instant pot is super easy.

  • Simply pour the soup into the instant pot, close the lid, and set the valve on a sealing position. Press the press ‘Pressure Cook’ and set the timer to ‘Zero’ minutes.

Alternately, if you want to reheat the fish soup slowly, you can press the ‘Keep Warm’ button. This will warm up the soup gradually.


It is perfectly possible and safe to reheat the fish soup, depending on how you do it. If the proper procedures are followed to cook, store, thaw, and reheat the soup then keeping quality, flavor, as well as nutrition profile, can be preserved.

Just be sure to reach 165o F or 75o C whenever you reheat fish soup!


Your Guide to Making and Storing Soup, from Where to Keep It to When to Get Rid of It | Martha Stewart

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Hello, I'm Sana Ameer. I'm a student of Food Science and Technology at UVAS. I like to bake and I aspire to become a Food blogger.