What to do is clear: shun copper cookware in which copper comes in direct contact with the food.

Professional chefs like copper cookware because it heats evenly and cools quickly.

And copper cookware should never go in the dishwasher.

However, the use of leaden cookware, though popular, was not the general standard and copper cookware was used far more generally.

There is also an interesting atelier that makes classic French copper cookware.

There are also business selling knives, copper cookware, other kitchen utensils, groceries, banks and government offices.

He cautions consumers that tin-lined copper cookware must be used over moderate heat because tin will begin to melt near 449 degrees Fahrenheit.

Many countries and states prohibit or restrict the sale of unlined copper cookware.

A halved lemon dipped in salt or baking powder is used to brighten copper cookware.

She said they could not "stomach getting $500 copper cookware" and allocating only 6 percent of the cost to charity.