Tillie Doyle
Copper pans are beautiful and efficient with heat, but they do require some care. If you're thinking of using an old copper pan, there are a few things to consider. Firstly, check the lining—if it's scratched or damaged, the pan is no longer safe to use. Old copper pans were often lined with tin, which can wear away over time, exposing the copper. If the lining is intact, your pan is likely safe to use, but be aware that copper is reactive and can leach into food when exposed to acids like tomatoes or citrus fruits. Modern copper pans are often lined with stainless steel, which prevents this issue, but some cooks prefer the taste of food prepared in tin-lined pans. If you're unsure about your old copper pan, you can always seek the advice of experts in vintage copper cookware.
| Characteristics | Values |
|---|---|
| Use of old copper pans | Safe to use if the lining is intact |
| Lining | Likely to be tin for vintage pans made before the 1970s |
| Lining wear | Tin can be worn away with use and needs to be relined before use |
| Lining repair | Tin-lined pans can be relined by repair companies; stainless steel-lined pans cannot be repaired |
| Cleaning | Requires thorough drying to prevent tarnishing; mild abrasives like lemon and salt can be used to buff tarnished spots |
| Heat | Efficient heat conduction means a moderate flame is sufficient; high heat can cause discolouration |
| Utensils | Metal utensils should not be used to avoid scratching the lining |
| Food | Acidic foods like tomatoes should be avoided as they can corrode copper and contaminate food |
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What You'll Learn
Copper pans are efficient heat conductors, but can be reactive
Copper pans are highly sought after due to their excellent heat conductivity. Copper is an excellent heat conductor, second only to diamonds in this respect and five times better than steel. This means that copper pans heat up quickly and efficiently, and there is generally no need to use a high flame or preheat the pan before cooking. This makes copper pans extremely efficient and effective for cooking.
However, copper is a reactive metal. When exposed to oxygen, copper can break down over time, and when exposed to acids (such as acidic foods like tomatoes and citrus fruits), the metal can leach into the food, contaminating it. Copper is toxic when ingested, so even trace amounts of copper in food can be harmful. Therefore, it is essential to ensure that copper pans have a lining to prevent direct contact between the copper and food.
Unlined copper pans, or those with damaged linings, can leach copper into food during the cooking process, making them unsafe to use. Modern copper pans are often lined with stainless steel or tin to create a barrier between the copper and food, preventing copper poisoning. While tin is a popular lining material, it has a lower melting point and may not be suitable for high-heat cooking or rough cleaning. Stainless steel, on the other hand, is more durable but can be challenging to repair if damaged and may cause food to stick.
Overall, while copper pans are efficient heat conductors, their reactivity requires proper lining and care to ensure safe cooking. Regular maintenance, such as thorough drying and occasional polishing, can also help prolong the life of copper pans and prevent tarnishing.
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Copper pans can be lined with non-reactive metals, like steel or tin
Copper pans are beautiful and highly efficient with heat. They are also toxic when ingested. So, how can you use them safely? The answer is lining them with non-reactive metals like steel or tin.
Copper pans made before the 1970s are likely to be lined with tin. Tin is a soft metal that can be worn away with use and melts at high temperatures. This means that copper pans lined with tin are not suitable for broiling and high-heat searing. If the lining of your copper pan is damaged, it is no longer safe to use. You can get the pan relined with new tin or, if the pan is lined with steel, you may be able to repair it yourself.
Steel is now a more common lining for copper pans. It stands up better to high-heat cooking and rough cleaning. However, food tends to stick to steel, and steel-lined copper pans are not as thick as those lined with tin.
If you want to test your copper pan for the presence of lead, you can buy a 3M LeadCheck Swab. You should also be aware that tomato and other acidic foods can corrode copper and render your food inedible.
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Tin linings can melt at high temperatures and wear away over time
Tin-lined copper cookware requires careful use and cleaning to prolong the life of the tin lining. It is recommended to avoid using metal utensils with tin-lined pans and to avoid abrasive cleaning products and sponges. Instead, mild abrasives like salt, lemon juice, or a combination of the two can be used to buff away tarnish.
While vintage copper pans may have intact tin linings, it is important to inspect them before use. If the copper is showing through, indicating a worn-out lining, the pan should be relined with new tin before being used for cooking. This process involves removing the old tin and applying a new layer of molten tin.
Tin-lined copper pans offer a combination of beauty and functionality. They are valued for their superior heat conduction, browning capabilities, and flavour creation. Thicker copper pans, with a thickness of 2.5mm or more, are considered more versatile and useful for a wider range of cooking tasks.
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Steel linings are sticky, so food can adhere to them
Copper pans are beautiful and highly efficient with heat. They are also toxic when ingested, so it is important to ensure that there is a barrier between your food and the copper to prevent copper poisoning. While vintage copper pans were lined with tin, modern copper pans are lined with stainless steel.
Steel-lined copper pans are advantageous because they stand up better to high-heat cooking and rough cleaning. However, steel linings are "sticky," which means that food tends to adhere to it when cooking. This is a problem that does not occur with tin-lined pans.
Tin-lined pans have their own drawbacks. Tin is a softer metal, so it can be scraped away with a scrub sponge and an abrasive cleaner. Tin also begins to melt at 450°F (232°C), so it is not suitable for broiling and high-heat searing.
Because of the drawbacks of both steel and tin linings, some cooks prefer to use different pans for different tasks. For example, a copper sauté pan for browning meat and a tin-lined saucier to make sauce.
If you are using a steel-lined copper pan, there are some things you can do to prevent food from sticking. Firstly, because copper is extremely efficient with heat, there is no need to use a high flame or preheat the pan before cooking. Keep the heat moderate, and let the pan do the work. You can also try lining the pan with a thin layer of fat, such as butter or oil, to create a barrier between the food and the pan.
If food does stick to your pan, there are a few ways to clean it. You can use a commercial copper cleaner, such as Wright's Copper Cleaner or Brasso, with a soft cloth and some elbow grease. For dark spots, you can use hardware store wool and detergent. You can also make your own copper polish with lemon juice or white vinegar, baking soda, and a soft cloth.
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Copper pans can be restored and repaired
Copper pans made before the 1970s will most likely have a layer of tin, which can wear away with use. Modern-era copper cookware is lined with stainless steel instead of tin because steel stands up better to high-heat cooking and rough cleaning. However, steel-lined copper pans cannot be repaired and must be replaced if the lining is damaged.
Copper pans are built to last and can be successfully restored with just a pantry and a little patience. Copper pans are extremely efficient with heat, and there is generally no need to use a high flame or preheat before cooking. If you do accidentally turn up the heat too high and discolouration occurs, you can use a copper cleaner, such as Wright's Copper Cleaner or Brasso, to restore the pan.
Copper pans can be cleaned with warm soapy water and thoroughly dried. Any residual water could lead to quicker tarnishing of the copper. To remove tarnish, you can buff spots with a mild abrasive, such as a lemon sprinkled with table salt. You can also add cornstarch to the mix by mixing equal parts salt and non-iodized cornstarch with enough lemon juice to make a paste. Rub this paste on the copper pot with a soft cloth, then rinse with warm water.
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Frequently asked questions
Yes, if the pan is in good physical condition and its lining is intact. If the lining is scratched, dinged up, or damaged, the pans are no longer safe to use.
For French copper pots and pans made before the 1970s, the lining will most likely be a layer of tin, which can be worn away with use. You'll know it's worn out when copper starts showing through.
Wash with warm soapy water and dry thoroughly. Any residual water could lead to quicker tarnishing. You can also buff tarnished spots with a mild abrasive, like a lemon and salt mixture.
Copper pans are toxic when ingested, so you don't want even trace amounts to get into your food. Copper pans with a lining of non-reactive, food-safe metals like stainless steel or tin are safe to cook with.
