Patina adds character to copper and bronze antiques—just don't confuse it with rust. When it comes to metal—be it a copper pan or an antique made from bronze—differentiating between a patina ...

While cooking rhubarb in an old pan, Hoffman saw that his formerly tarnished metal “fairly sparkled” after cooking, and thus discovered the active ingredient which has powered BKF for over a ...

Copper plunged more than 5% to trade below $9,000 a ton, in the biggest drop since July 2022, as worries over the impact of a worsening trade war sparked a heavy selloff in industrial metals and ...

While cooking rhubarb in an old pan, Hoffman saw that his formerly tarnished metal "fairly sparkled" after cooking and thus discovered the active ingredient which has powered BKF for over a century.