Sour Milk Silver Soak

Picture of Silver Platters - Tipnut.com If you have a carton of milk that has expired, don’t toss it out because sour milk is a great silver cleaner.

For every cup of of milk, stir in one tablespoon lemon juice or one tablespoon vinegar and leave for five minutes so it sours.
If the milk is sour already, you can skip adding the lemon juice or vinegar.
Soak your silver pieces in the sour milk overnight (completely covered) and then wash as usual.