Porcelain Sinks I:
- 2 T powdered alum (a bleaching agent that can be found in most drugstores or where pickling supplies are sold)
- 2 T lemon juice
- Mix and apply to the porcelain and using a soft cloth dampened with lemon juice.
- Scrub until clean.
Porcelain Sinks II:
- To clean porcelain surfaces, rub with cream of tartar sprinkled on a damp cloth.
