Immediately after use, remove the gasket and wash the lid by hand thoroughly inside and out. The exposed inside edge of the lid should be given special attention. The gasket should be cleaned, dried and returned to the lid.

If the pressure cooker lid is hard to turn when closing, the gasket has become dried out and should be lightly rubbed with cooking oil.

The pan (not the lid) is dishwasher safe. 

If difficult stains and/or baked-in spots occur, try simply soaking the pan or adding water to the pan and bringing it to a boil. If white stains occur, this is a natural result of calcium deposits due to hard water, or starch deposits from foods like rice or beans. Such deposits are best removed with a few drops of vinegar or lemon juice.

For a "showcase shine," try a food-safe metal cleaner such as Kuhn Rikon's Swiss Cleaner. Abrasive cleaners should be avoided.