Kitchen knives are essential tools in the kitchen, but they can easily rust if not properly cared for. Rust can make a knife dull and difficult to use.

There are a few ways to remove rust from a kitchen knife. One common method is to use rice water. Simply soak the knife in rice water for several hours or overnight. The rice water will help to dissolve the rust.

Another method is to use an onion. Cut off a piece of onion and rub it over the rust on the knife. The onion will help to remove the rust and leave the knife shiny.