Home Crochet baby clothesOld frying fat / frying oil: this is how you properly dispose of edible oil residues

Old frying fat / frying oil: this is how you properly dispose of edible oil residues

  • Change frying fat: The right time
  • Dispose of frying oil / cooking oil
    • residual waste
    • Recyclables Hoff
  • Do not dispose of frying oil in any way
  • Sell ​​old frying oil
  • re-use
  • Tips for quick readers

Whether you want to make chips yourself or bacon roasted crispy, frying and cooking oil are indispensable in any household. At some point, however, the old edible oil residues and the frying fat have to be changed, because old frying fat reduces the quality of the prepared food. However, the old fat does not belong in the normal kitchen waste and must therefore be disposed of separately. Learn in this post everything you need to know about the disposal of frying fat and cooking oil leftovers.

Change frying fat: The right time

Frying fat binds the taste of various foods and passes them on to the food after repeated use. This can cause their deep-fried dishes to all taste the same at the same time, in addition, with the use of old frying fat, the food become greasy.

After these intervals frying fat should be changed

  • 6 - 8 frying operations
  • 20 - 25 hours of operation

Tip: If you free the still-warm frying fat from the food residues immediately after use with a sieve or coffee filter and also store it refrigerated, then you can delay the spoiling of the fat.

However, it is recommended to change the frying fat after a maximum of 8 frying operations. However, the 20 to 25 hours of operation correspond significantly more than 8 frying operations. Exact statements as to how long the frying oil is good, however, can not be general, since this is highly dependent on the choice of fried food. Potato products put less pressure on frying oil than, for example, protein-rich foods such as meat and fish.

At the following signs you should change the frying oil

  • Odor: rancid, scratchy or pungent
  • Taste: Talgig, scratchy to bitter
  • Frying bubbles : only small bubbles form
  • Smoke and foam development: very strong even at low temperatures

Note: Always change all frying oil.

Dispose of frying oil / cooking oil

There are several ways to dispose of the old frying oil or to reuse it in different ways. With larger quantities you can make the old fat into money, in which one sells it.

residual waste

For normal household quantities, the frying fat belongs in the household waste (black bin) . In the waste incineration plants, the residual waste is finally burned together with the fat. Since fat burns well, it helps the combustion. The only thing to keep in mind is that you fill the old grease or oil in a container, which can also be disposed of with the residual waste. If you have no vessel available, then you can leave on the next recycling center such containers. Another option would be to tie the frying oil with cat litter or old newspapers and dispose of it in the household waste.

Recyclables Hoff

Another way to dispose of the old frying fat for free, offers the recycling center. The recycling depots have their own disposal system for edible oils and therefore also offer the appropriate containers for filling the oil. You can also fill the frying fat in PET - or the original bottle to bring it to the recycling center.

Do not dispose of frying oil in any way

If you dispose of your old frying fat improperly, you have to expect a fine. The penalties vary from state to state, but can sometimes be very high, especially if it is a larger amount of old cooking oil. It is differentiated here in quantities up to 0.5 liters, 1 liter and more than 2 liters. The penalty range from 10 € for 0.5 liters to 1500 € for more than 2 liters of incorrectly disposed cooking oil.

No disposal in the bio bin

Organic material from the kitchen is usually disposed of via the biowaste or comes to the compost and rots there. Because frying oil does not rot, it interferes with this process as it lays around the organic material and forms a greasy film on the surface. Furthermore, it could gradually get into the soil during disposal in the compost heap, where it can pollute the groundwater.

No disposal in the drain or in the toilet

For convenience, frying oil is occasionally disposed of through household drainage systems, but as oil is not water soluble, it causes some problems with this improper disposal. On the one hand, it sticks to its own drainage pipes and, on the other hand, the old oil gets into the sewage and can thereby penetrate into the groundwater. It can even attract pests such as cockroaches and rats as they are attracted to such food debris.

Sell ​​old frying oil

For large consumers of edible oil, such as restaurants or food processing companies, there are various providers who take care of the Altfettentsorgung. The used fat then returns to the economic cycle by being processed by the industry into biodiesel and lubricant.

The service of the grease disposal company includes

  • Provision of disposal containers
  • Regular container change
  • Creation of disposal certificates according to legal requirements
  • Professional disposal of the old edible oils
  • Supply of fresh cooking oil

The old grease disposal is then remunerated or the bulk consumer receives a credit note, which is offset against the Frischölieferung. In terms of price, it can be said that 1 ton of purified edible oil is paid at 500 €.


Of course you can also keep old frying oil and use it for other purposes in the household. The mixture of fry fat with birdseed, sunflower seeds, acorns and nuts makes a good meal for hungry birds . You can also feed your pigs and chickens by mixing the frying fat with the food. In addition, you can make a homemade oil lamp from the old cooking oil . Another interesting idea is the homemade soap from old cooking oil, but this may not be mixed different oils.

Tips for quick readers

  • Change the frying fat after 8 inserts at the latest
  • Fill cooking oil into a container
  • Dispose of small quantities in the residual waste bin
  • Larger quantities can be dispensed in the material yard
  • No disposal in the drain or the bio-bin
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