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Welcome to our FAQ - also known as Frequently Asked Questions. We have collected the most common questions that we usually receive. We hope this can quickly help you with answering your questions! :)

There are several things you can do to ensure that you get the best non-stick result out of our non-stick coating.


Seasoning. Heat up a teaspoon of oil and let it cool on the pan. Wipe it off and clean it afterwards. This can help the pan mature faster and achieve a better non-stick coating. Use low heat. Our frying pan is designed to absorb heat much more efficiently than other frying pans, so it is advisable to use lower heat settings than you normally would.

Patience. When handling very sticky foods, such as eggs, patience is key. Making the perfect egg on an ONYX COOKWARE™ frying pan without butter or oil is simply a matter of using low temperatures and then letting the egg sit and finish cooking without constantly moving it around. If you find that things are not releasing from the non-stick surface, it usually means you need to let it sit until it has been heated/boiled/fried, after which it will release from the pan much more easily!

We have two types of non-stick coatings: our Ceramic and our Original.


Our ceramic non-stick coating is made of natural materials. Ceramic coatings primarily consist of silica (sand), which forms a type of clay that works together with the metal of the pan. It is an organic partnership that provides a completely chemical-free non-stick experience. The ceramic coating ensures that the product is completely free of PFC and PFAS. This means that it does not contain any fluorescent substances or chemicals.

Our original non-stick coating is made of the material PTFE, commonly known as Teflon. PTFE is one of the most widely used non-stick coatings in the world and comes in various qualities and prices. We use a high-quality Japanese PTFE that provides maximum durability. A common mistake is to confuse PTFE/Teflon with PFOA, PFOS, or other harmful chemicals in the PFAS family. PFOAS, PFOA, and PFOS are banned substances that are not used in our kitchenware.

First, let's clarify these abbreviations:

PFAS: A collective term for a range of fluorinated substances. It includes both hazardous and illegal substances, as well as commonly used substances that are neither illegal nor hazardous.

PTFE: The technical term for the most commonly used non-stick coating in the world, also known as Teflon. PTFE is part of the group of fluorinated substances that belong to the PFAS family.

PFOA/PFOS: The two hazardous substances that were banned many years ago, also part of the larger group of substances in the PFAS family.

PFAS substances are not inherently illegal or toxic to use. This also applies to PTFE/Teflon, which is found in almost all products with non-stick surfaces.

But both PFAS and PTFE/Teflon are inherently fluorinated substances. If you wish to completely avoid the use of fluorinated substances, you should naturally not purchase a product with PTFE/Teflon.


But back to the question: Are there PFAS in our coating?

When it comes to our own frying pans, we have two types of coatings:

One is a Ceramic coating, which is completely free of all PFAS substances. In other words, no fluorinated substances are involved at any stage of production. A Ceramic coating is essentially made from sand/clay that is baked. It is therefore what TÆNK would classify as "PFC-free and PFAS-free."

The other is our Original coating, which is a PTFE/Teflon coating and therefore contains PFAS by its nature.

It is important for us to emphasize that the PTFE/Teflon coating on our Original frying pans is not toxic or leaching any fluorine into your food. All our products, including the coating on our frying pans, comply with strict quality requirements and have been tested according to all applicable food safety standards.

The short answer is: No - if it does, it is covered by our warranty!

The long answer is: Our products are made of stainless steel and aluminum. Therefore, our products share the same properties as others made of the same materials, which means they should not be exposed to cold water immediately after use. We strongly recommend always allowing them to cool down first.

However, we have worked hard to ensure that our products are robust enough to withstand anything they may encounter in a kitchen, and therefore, any warping, denting, or other changes in shape are fully covered by our warranty!

Our frying pans are named and measured in centimeters. A 26 cm frying pan is called so because it measures 26 cm from the top inner edge to the top inner edge. This is a standard way of indicating frying pan measurements, making it easy to determine which lid fits, as the lid measurement is indicated by the inner edge that fits into a pot or pan of the same centimeter measurement.

To find more measurements for the frying pan, pot, or any other product, please scroll to the bottom of the product's own page.

Depending on your cooking style and your expectations for your frying pan's properties, there are differences in which model is best suited for you. Therefore, we have specified below the differences between the two coatings you can choose from.


Difference between the pans:

The Original pans have the following important properties/differences:

The coating consists of a PTFE layer, which is a more flexible layer and provides the pan with higher durability.

Due to the higher durability, you can use steel wool on this pan.


The Ceramic pans have the following important properties/differences:

Due to the ceramic layer, the non-stick effect is better than on the original PTFE pans.

Although the non-stick effect is better, the durability is lower. This means that steel wool CANNOT be used on ceramic pans.


Common strengths for both types of coating:

You can use dull metal kitchen utensils in both types of frying pans, and both frying pans can be used on all types of stoves. Both models can withstand cleaning with soap and acidic food, which are at opposite ends of the pH scale.

You can put your detachable handle in the dishwasher, but we suggest washing it with a damp cloth if it's not too dirty.

You can easily find this information by accessing the product page of the pan or pot you want to know the weight of. There is an illustration at the bottom of the page that shows the weight and dimensions of the product.