[header] How to clean nickel plating [title] Polish the nickel with a soft cloth. [step] Before trying anything else, see how much grime you can clean by wiping it away. Many grease spots, smudges, and patches of grime can be buffed away with cloth and a little bit of warm, running water. 
Use a soft, non-abrasive cloth and rub down the nickel plating, applying extra pressure and attention to dirtied areas. Use small, circular motions to buff away the grime.