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Are Copper Kettles Safe?

Updated February 21, 2017

Although copper is a beneficial nutrient when consumed in minuscule amounts found in food, it can be toxic if leached from copper kettles and pots through cooking. Copper kettles are safe to use if they meet certain criteria.

Unlined Copper

Antique or used copper kettles that have no protective lining of aluminium or tin are dangerous to use for cooking or boiling water. The chemical reaction with water or high acid foods like tomatoes or citrus fruits may be tasteless but can cause stomach or digestive system problems.

New Copper Kettles

Most copper pots commercially produced in the United States are thinly lined with nickel, stainless steel or tin to create a barrier with the copper surface. These kettles and pans are safe to use for any cooking or baking application.

Lacquered Pots

Since copper is highly sensitive to air and easily discolours, manufacturers frequently coat it with a thin layer of lacquer to keep it attractive during storage. Remove this coating with an acetone solution prior to the first use to prevent the copper from turning black permanently upon exposure to heat.

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About the Author

Cassie Damewood has been a writer and editor since 1985. She writes about food and cooking for various websites, including My Great Recipes, and serves as the copy editor for "Food Loves Beer" magazine. Damewood completed a Bachelor of Arts in English with an emphasis in creative writing at Miami University.