You Asked: How Do I Safely Discard Frying Oil?
Briefly

After cooking with oil, you have to find a way to dispose of it properly—pouring it down the drain leads to fatbergs in sewage systems, which is a big problem.
Oil solidifiers make the disposal process easier and cleaner. They come in packets and help turn leftover oil into a solid form that can be easily thrown away.
Read at Food52
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