Polishing your silver, whether it’s jewellery or cutlery, is a strenuous task. But there is a very easy, low-cost, low-hassle way to clean your tarnished silver cutlery, using just a bit of aluminium foil, some salt and some boiling water, says a German consumer advice centre. Take a glass, ceramic or porcelain bowl that is completely lined with aluminium foil. Don’t use a metal bowl. Make sure you are either outdoors or in a room that is well ventilated. Next, place your cutlery in the bowl. Then add the salt and boiling water. This produces hydrogen sulphide, which smells like rotten eggs. N…