The patina project explores ways of getting colour on copper and brass by using eco-friendly substances from the kitchen, backyard and grocery store. These pieces have been exposed to substances such as soy sauce, red onion, and horseradish to develop unique patinas. Patinas are somewhat unpredictable, so two pieces treated with the same patina will often differ from each other. When the desired colour is obtained, the finished object is lacquered to maintain the patina, and the used patina is safely disposed of in the compost pile.