Locking in Flavors
Aluminum foil helps with freezing food since it traps particles and locks in the flavors.

Locking In Flavors
If you have leftovers, wrap the food in foil to ensure they are till delicious and fresh when you serve it.
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Preserving Steel Wool for Longer
Steel wool is good if you need to get rid of sink or dish gunk, but they can get really rusty quickly.

Preserving Steel Wool For Longer
However, you should not throw it right away! Just wrap it in foil and put it in the freezer. Voila!