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How to clean oil in your commercial kitchen

How to clean oil in your commercial kitchen Stainlesscleans Commercial Cleaning

Kitchens are a hectic place. There’s so much going on and it’s hard to juggle focusing on your business and cleanliness.

Cleaning oil is a tedious task but one that is important to do regularly.

Read on to find out how to reuse your cooking oil to save money, how to store it, dispose of it, and how to clean it.

Plus, if you read to the end, we’ve got a freebie worth £150 for you.

Does cooking oil go off?


Good quality oil should last about a year but lower quality oil will last a few months.

To avoid storing oil for too long, buy what you need and use it as soon as possible.

While cooking oil that has gone off usually won’t be harmful, it can develop potentially toxic compounds that create a condition of oxidative stress in your cells which are linked to advanced aging, neurological disorders, heart disease and cancer.

You will know if your oil is off because:

  1. It may give off a sour or musty smell
  2. It t will taste sour or strange.

If in doubt, throw it out. 

How to clean oil in your commercial kitchen Stainlesscleans Commercial Cleaning

How to store cooking oil in a commercial kitchen

Your cooking oil is best stored in a cool, dry, and dark space. Oxygen, heat, and light can both impact the quality and cause it to go off.

Ensure you seal your oil properly to avoid oxygen getting into it. 

How to get rid of oil

What to do with oil after frying?

You can either reuse it or throw it out.

Producing waste cooking oil as part of your catering business means you must ensure it is stored properly and collected by an authorised collector.

It cannot be poured down drains or sewers otherwise it could cause blockages, smells, vermin issues, and pollutes the water.

It also cannot be taken to household recycling centres if you’re a commercial customer.

For restaurant grease collection or oil, you should arrange collection of your oil with an authorised collector. They can sometimes provide free oil or grease containers for your restaurant to store it. 

How to clean oil in your commercial kitchen Stainlesscleans Commercial Cleaning

Can you freeze oil?

Yes, you can freeze oil, but it’s not recommended.

Cooking oil will never freeze completely. Different oils will have varying temperatures they ‘freeze at’.

The oil will become cloudy, so it is best to use it as soon as possible without having to freeze it. 

Can you reuse cooking oil?


You can clean oil to reuse it. 

How to clean a deep fryer

It’s important to deep clean your commercial deep fryer for several reasons.

The first is that it can get full of debris and the oil can be tainted by the food which latches onto other food items.

It’s also important to clean your kitchen equipment to stop the spread of bacteria, prevent poor food hygiene ratings, and to maintain your equipment.

  1. Turn off power and cool oil
  2. Take out filter baskets and clean   
  3. Remove oil   
  4. Remove debris with a food strainer and scrap and wipe interior
  5. Add detergent or degreaser and water and boil
  6. Cool down, dispose of water and rinse.

You can then filter your oil and add it back into the fryer or if it’s too dirty, you can dispose of it and change the oil in
your fryer.

How to clean oil in your commercial kitchen Stainlesscleans Commercial Cleaning

How often should you change fryer oil in your restaurant?

Your fryer oil should be changed every week or two, depending on how busy you are.

The oil should be filtered daily if you are busy or every couple of days if footfall is decreased.

How to clean oil in your commercial kitchen Stainlesscleans Commercial Cleaning

How to clean cooking oil for reuse

Filtering cooking oil to reuse is simple to do, simply follow these steps:

  1. Skim oil
  2. Strain
  3. You can do this with a strainer or cheesecloth or coffee filters
  4. Pour the oil back into a container to be used again or to store

Use your cooking oil for similar foods and don’t use it for example, for fish and chicken otherwise it will taint the taste.

If the oil becomes too dark or foamy then it should be replaced instead of filtered. 

How to clean up oil spills in the kitchen

There’s a lot going on in commercial kitchens and accidents can happen. If there is an oil spill, it’s important to clean it up as soon as possible to prevent any slips.

Follow these steps to clean up oil spills:

  1. Wait for the oil to cool if it’s hot
  2.  Block the area off
  3. Soak up any excess oil (you can use baking soda, salt, sand, or old dishtowels to clean oil spills)
  4. Mix warm water and soap, and mop.

How to clean oil in your commercial kitchen Stainlesscleans Commercial Cleaning

How to get oil out of clothes

If the cooking oil should get on your chef’s whites, you can use baking soda, chalk or dish soap to remove it.

White vinegar acts as a degreaser if you mix it with water and apply it to the stain. 

How do you clean greasy restaurant walls?

You should have a grease trap for commercial kitchens which should be cleaned every month.

Water won’t get rid of grease because the water molecules don’t stick to the grease molecules.

Use a commercial grease cleaner to clean oil and grease stains on walls.

Which chemical is best when cleaning a deep fryer?

A good degreaser should be food safe.

Using sustainable cleaning products can be better value because they tend to last longer.

A concentrated powder cleaner and degreaser is a sustainable option and last a long time.

The FreshClean Super Concentrated Powder Cleaner and Degreaser holds 4kg and fills 1,600 trigger buttles which is just £0.05 per spray and saves over £2,000.

The FreshClean degreaser can clean a multitude of surfaces including ovens, stainless steel, hard surfaces and it can be used to degrease restaurant floors to avoid slips. 

How to clean oil in your commercial kitchen Stainlesscleans Commercial Cleaning

How to handle a grease fire in your restaurant

A grease fire can quickly escalate if it is not handled properly.

To extinguish a grease fire, do not use water.

Instead cover the flame with a metal lid and use a fire extinguisher.

Then call the emergency services if you need to.

Make sure all staff know how to deal with a grease fire.

How to clean oil in your commercial kitchen Stainlesscleans Commercial Cleaning

How to clean oil in your commercial kitchen

It can be difficult to keep a consistently high-quality of cleanliness in your restaurant.

Ensuring staff carry out their cleaning duties and to the correct standard while doing their own job can be stressful.

Hiring restaurant cleaning services, we can save you this stress and money.

At Stainlesscleans commercial cleaning we provide you with a dedicated account manager to regularly inspect your kitchen to ensure a high standard is consistently met.

We take care of all the paperwork, which is one of the reasons so many hospitality businesses don’t achieve a 5-star food hygiene rating.

If you’re a business in London and interested in our restaurant cleaning services London, you can get a FREE kitchen site survey to find out what you need and how much it would cost because we personalise all of our
services to suit you and your budget.

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