For an easy, instant way to clean copper pots (or any other copper knick knacks you have around the home) try this:
- Cut a lemon in half and sprinkle liberally with regular table salt
- Rub the cut surface on the copper surface
- Use a soft cloth to wipe the residue away and you'll be left with a gleaming, shining copper surface. Seriously, your old dingy copper pots will look brand new!
While I tried this with a lemon, I'm sure it would work with other citrus fruits as well. Give it a try!