It’s typically safe to reuse cooking oil, but there are some precautions you should take. Avoid reusing oils that were used to fry strongly flavored foods such as fish.

To dispose of larger quantities of cooking and frying oil, always let it cool down first to prevent injury and keep whatever you transfer it to from melting.

Knowing what to do with used oil and grease is a requirement of being a cook, so here's a quick guide to reusing and properly disposing of it.