You've used half an onion for a recipe and aren't sure what to do with the rest. Worried it will spoil in the fridge?
I felt the same way until I mentioned it to my mother-in-law. She shared her go-to trick: "Don't you know the butter and aluminum foil method?"
I didn't—but now I do. It's a simple, natural, and nearly free way to extend its freshness. Here's how it works:
1. Cut a small, thin slice of butter.
2. Press it firmly onto the cut surface of the onion.
3. Wrap the onion tightly in aluminum foil.
4. Place it in the refrigerator.
Your half onion will stay fresh for several days! :-)
Simple, practical, and highly effective. This family-tested trick, passed down through generations, helps avoid waste when you only need part of an onion for cooking.
