Fat makes food taste good, but greasy food has a way of lingering in the air—and on the dishes—long after a meal has ended. If you’re sick of finding oil slicks on dishes you could have sworn were clean, you owe it to yourself to fill a spray bottle with vinegar and keep it near your kitchen sink.
Source: LifeHacker – Plain White Vinegar Is the Dishwashing Hero You Need (And Deserve)