Lunchbox aluminum

A lunch box made of aluminum always comes into question when you hear that ordinary plastic boxes emit pollutants after some time and do not constitute paper bags for the Pausenbrot also the best solution. Unfortunately, the first wash has the same Alubox not survived without damage in the dishwasher. She looks as if she was very old with a white rash and the polished aluminum is no longer visible. Perhaps we should at least write down that you should not machine wash the box.