Emilie Meyer
Nonstick pans are popular for their convenience and ease of use, but they require careful handling to maintain their nonstick properties. The use of metal utensils, such as spatulas, on nonstick pans is a widely debated topic. While some sources claim that the occasional use of a metal spatula may only cause cosmetic scratches, especially on ceramic-coated pans, others emphasize the risk of scratching the nonstick coating, which can lead to the pan's degradation and the release of potentially harmful chemicals into your food. To maintain the integrity of your nonstick pan, it is generally recommended to use utensils made of materials like nylon, wood, rubber, or silicone, which are softer and less likely to scratch the coating. So, when it comes to coated pans, it is advisable to opt for plastic or silicone spatulas over metal ones to prevent scratching and ensure the longevity of your cookware.
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What You'll Learn
Plastic spatulas are safe to use on coated pans
Non-stick pans are coated with PFAS (per- and polyfluoroalkyl substances), also known as "forever chemicals" due to their longevity. One common PFAS is polytetrafluoroethylene (PTFE), found in the popular brand name Teflon. While two of the major PFAS of concern, PFOA and PFOS, have not been used in PTFE non-stick coatings since 2014, the health impacts of newer PFAS are still being studied.
When a non-stick pan is heavily scratched, it is recommended to stop using it. The best way to avoid scratches is to use nylon, wooden, or silicone utensils, which are gentle on the coating and will not cause damage. Silicone spatulas are especially useful for non-stick pans as they are dishwasher-safe and have tapered edges that easily slip under food.
While small scratches on a ceramic pan caused by metal utensils may not impact performance, it is still recommended to avoid metal utensils on non-stick pans to preserve the coating. Cast-iron skillets are a good alternative for high-heat cooking, as they can build a fairly non-stick surface through "seasoning," a process that creates a black protective layer of polymerized oil. However, cast iron requires special care when cleaning and seasoning.
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Metal utensils can scratch coated pans
Scratches on non-stick pans can cause the release of microplastics and nanoplastics into your food, potentially exposing you to toxic chemicals. The risk is higher if the pan is heated to high temperatures or is heavily scratched. If your non-stick pan is only lightly scratched, it may still be safe to use at low to medium heat. However, it is recommended to replace the pan if the scratches are affecting its non-stick performance or if food starts sticking to the pan.
The type of coating on your pan can also determine whether metal utensils will cause significant scratching. Ceramic coatings, for example, are more durable and less likely to be damaged by metal utensils. On the other hand, PTFE-based coatings are more susceptible to scratching from metal utensils.
To avoid scratching your coated pans, it is recommended to use utensils made from materials such as nylon, wood, rubber, or silicone. These materials are softer and less likely to damage the coating. Additionally, hand washing your pans with a soft sponge and storing them with a cloth towel between them can help prevent scratches.
While stainless steel pans are known for their durability and ability to withstand various utensils, including metal spatulas, it's important to distinguish them from non-stick pans. Stainless steel pans require preheating to prevent food from sticking, whereas non-stick pans have a chemical coating that seals the pores of the metal, preventing food from binding even before the pan is heated.
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Ceramic coatings are more durable than PTFE-based coatings
While PTFE coatings are more durable in terms of non-stickiness, ceramic coatings are harder and more scratch-resistant. PTFE coatings have a low surface tension, and their smooth surface and stable molecular chain structure contribute to their excellent non-stick performance. However, their non-stick properties are determined by their surface morphology and chemical characteristics. On the other hand, ceramic coatings rely on silicone oil for their non-stick properties. Once the silicone oil is depleted, the non-stick effect is lost.
Ceramic coatings are made from inorganic materials and can withstand higher temperatures than PTFE coatings. They are generally safe up to temperatures of about 450°C (842°F), while PTFE coatings start to decompose and release harmful fumes at temperatures above 260°C (500°F). This makes ceramic coatings a safer option for high-heat cooking methods.
In terms of environmental impact, ceramic coatings are also more favourable. They are derived from natural minerals and require less intensive chemical processes, emitting fewer greenhouse gases during production and being less harmful upon disposal. PTFE coatings, on the other hand, require perfluorinated chemicals in their manufacturing, contributing to environmental pollution and health risks.
While ceramic coatings may be more prone to chipping and wear over time, they offer a chemical-free cooking surface. Proper maintenance is essential for both types of coatings to extend their lifespan. Regular care can keep them functional longer, but once signs of wear appear, replacement is recommended for safety reasons.
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Nonstick pans should be hand-washed to avoid scratching
Nonstick pans are a blessing in the kitchen, making cooking easier and more enjoyable. However, to keep them in good condition, it's important to hand-wash them instead of putting them in the dishwasher. Here's why:
Firstly, nonstick pans require special care due to their coating. The coating, often made of polytetrafluoroethylene (PTFE) or ceramic, creates a slick surface that prevents food from sticking. However, this coating can be delicate and prone to scratching, especially with metal utensils. While small scratches may not impact the pan's performance, deeper scratches can affect its nonstick properties and cooking performance.
Secondly, hand-washing nonstick pans helps maintain their longevity. The high temperatures and harsh detergents in dishwashers can break down the nonstick coating over time, causing it to peel or warp. By hand-washing with mild soap and a soft sponge, you can gently clean the pan without risking damage. It's also important to avoid overheating the pan, as high temperatures can degrade the coating and release potentially toxic fumes.
Additionally, it's crucial to use the right utensils with nonstick pans. Silicone, rubber, nylon, or wooden utensils are ideal as they won't scratch the surface. Metal utensils, on the other hand, can easily leave marks and scratches, compromising the integrity of the coating. Even with careful use, nonstick pans may eventually need to be replaced, especially if the coating starts to degrade or food begins to stick.
By hand-washing nonstick pans and using appropriate utensils, you can prolong their lifespan and maintain their effectiveness. While the occasional use of a metal spatula on a ceramic-coated pan may not cause significant damage, it's best to avoid making it a habit to ensure your nonstick pans remain scratch-free and functional for as long as possible.
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Scratched nonstick pans may release toxic chemicals into food
While plastic spatulas are less likely to scratch nonstick pans than metal utensils, they can still cause cosmetic scratches on the surface of the coating. However, the real concern with scratched nonstick pans is not their appearance but the potential health risks associated with them.
Nonstick pans have long been linked to toxic "forever chemicals", and a 2022 study found that a single scratch on a nonstick pan's surface can release thousands to millions of microplastic particles, contaminating food with harmful chemicals. These chemicals, known as PFAS (per- and polyfluoroalkyl substances), have been associated with various health issues, including liver disease, chronic kidney disease, high blood pressure, and certain types of cancer.
The risk of exposure to these harmful chemicals increases when nonstick pans are heated at high temperatures. Heating nonstick pans above 170°C (or 500°F) can release toxic fumes, which can not only be inhaled directly but may also contaminate the food cooked in the pan. Therefore, it is recommended to use nonstick pans at low to medium heat to minimize the risk of releasing toxic fumes.
To reduce the chances of scratching your nonstick pan, it is advisable to use nylon, wooden, or silicone utensils. Hand washing with a soft sponge is also recommended, as dishwashers can cause scratches on the pan's surface. Ultimately, if your nonstick pan is heavily scratched or no longer nonstick, it is best to replace it, especially if it was manufactured before 2015, as pans produced before this date may contain harmful chemicals like PFOA.
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Frequently asked questions
Yes, plastic spatulas are safe to use with coated pans.
Silicone and wooden spatulas are also safe to use with coated pans.
Metal spatulas should be avoided as they can scratch the coating and damage the pan.
Yes, avoid using non-stick cooking spray as it can build up over time and cause sticking. Also, avoid putting your pan in the dishwasher and overheating it.
If your pan is heavily scratched or no longer non-stick, it is recommended to stop using it and replace it with a new one.
