How often should you change the oil in a deep fryer

Last Updated on August 31, 2021

A deep fryer is a kitchen appliance used to deep fry food items such as french fries, doughnuts, and other fried foods. Deep fryers are usually found in restaurants and fast-food chains, but they are now becoming increasingly popular in homes as well.

A deep fryer is a great tool for any kitchen. It allows you to quickly and easily deep fry foods such as french fries, chicken nuggets, fish sticks, and even doughnuts.

A deep fryer is a safe way to cook food because it heats the oil to a very precise temperature, allowing you to avoid burning your food. Deep fryers also allow you to cook food in smaller batches, saving you time and moneyers are available in different sizes and shapes, depending on how many people you plan on cooking for. For instance, if you only plan on cooking for yourself, you probably won’t need a big deep fryer. However, if you plan on cooking for a family of four, you’ll definitely need a bigger deep fryer.

There is often a question that pops up in many people’s minds that is how often should one change the oil in a deep fryer? Today I am going to address this issue and we are going to discuss everything related to it.

How often should you change the oil in a deep fryer

For non-breaded veggies, deep fryer oil should be changed after 6-8 uses, and for breaded foods or fatty meats and fish, after 2-4 uses.

The first thing that comes into mind when someone asks me about changing the oil in a deep fat fryer is "how long does it take?" The answer to that question depends on several factors including:

1) How much oil do you have left after frying all those delicious treats? If there isn’t enough oil remaining then you will want to add more before continuing with the next batch. This can be done by adding new oil or simply using some leftover oil from previous batches.

2) What type of oil did you use? Some oils may require less frequent changes than others. You can find out what kind of oil you’re using by looking at the label on the bottle.

3) Do you know exactly where the oil came from? Did you buy it locally or was it shipped across the country? Knowing these details could help determine whether or not you need to replace the oil sooner rather than later.

4) Is the oil fresh? Freshly purchased oil has an expiration date printed on its packaging. When purchasing oil make sure that you purchase it within 6 months of opening the package. Once opened, store it in a cool dark place away from sunlight. Never refrigerate oil! Refrigeration causes oxidation which leads to rancidity. Rancid oil smells bad and tastes worse.

5) Are you storing the oil properly? Oil needs to stay between 35°F – 40°F (18°C – 5°C ). Storing it too cold or hot can cause problems like gelling and solidification respectively. Make sure that you keep the container tightly sealed so that no air gets inside. Also, don’t leave the oil sitting around for extended periods of time. Use it right away instead of waiting until the last minute.

6) Have you cleaned the pot thoroughly? A dirty pot means that bacteria grow faster and therefore require more frequent cleaning.

How long does oil last in a deep fryer?

The oil lasts longer in a deep fryer than it would in other types of kitchen equipment such as pots and pans. That being said, even though they last longer, deep fryers still require regular maintenance just like any other piece of kitchen equipment. Here are some tips to ensure that your deep fryer stays clean and healthy throughout the years:

  • Keep the lid closed while heating the oil. Leaving the lid open allows heat to escape and reduces the amount of oil needed to maintain proper temperatures.
  • Clean the Heat pot rises regularly. and It once doesn’t matter oil how reaches well-made 350 the degrees pot Fahrenheit, is; it eventually begins dirt to builds smoke. up It over doesn’t time. matter To if prevent the buildup, lid wipe is down open the or sides shut; of heat, the always pot travels every upwards. few Therefore, weeks. keeping Don’t forget lid to closed wash helps off prevent the splatters grease and splatters spill that inevitably occurs during Clean cleanup.
  • Wash the Pot regularly. The bottom of the pot collects food debris and grime. Regular washing keeps this build-up under control.
  • Use only high-quality cooking oil. High-quality cooking oil contains additives that protect against chemical breakdowns caused by exposure to extreme heat. These chemicals also inhibit bacterial growth making them ideal for deep frying.
  • Change the oil when necessary. As mentioned above, changing the oil ensures that the temperature remains consistent. If left alone, the oil will begin to break down causing harmful fumes to form. This process takes about two hours at room temperature but less than 30 minutes with the use of a deep fryer.

Can you reuse oil in a deep fryer?

Yes, you can reuse oil in a deep-fried. However, there are certain precautions that need to be taken before doing so.

First, do not re-use oil after it’s been used for baking. Baking uses much lower temperatures than deep frying. Second, never let the oil get hotter than 400º F. Anything higher than this could damage the machine itself. Third, never put metal objects into the oil. Metal conducts electricity and may short out the circuit board. Fourth, make sure that all parts of the deep fryer have cooled completely before using them again.

Fifth, store the oil in an upright position. Any sloshing motion could result in contamination. Sixth, avoid putting anything metallic near the oil because sparks from these metals could ignite the oil. Finally, remember to dispose of old oil safely. Never pour it down drains or fling it on the ground. Instead, take it outside where it can evaporate naturally.

The oil from a deep fryer may be reused. After the oil has cooled (approximately 2 hours), squeeze it into an airtight container with a cover using a filter or cheesecloth. For optimum effects, keep it refrigerated. Continue to use the oil for up to 8-10 times more, or until the color or odor has faded.

How can you tell if frying oil is bad?

If your oil smells like burnt rubber or tastes bitter, then chances are it’s gone bad. You don’t want to eat any fried foods made with such oil. In addition, the smell of burning plastic indicates that something went wrong inside the unit.

When you notice foam, the coloration is considerably deeper, or it smells terrible, you know your frying oil is rotten. Frying oil progresses from excellent to poor, darkening in color and becoming harsher and sourer in scent.


Deep frying is one of those things that people love to hate. But as long as you follow proper safety procedures, you won’t end up hating yourself! So go ahead and give it a try – we guarantee you won’t regret it.

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