How to Store Leftovers Reusing Containers

Put the leftovers in a container (from the lasagna* I love) in a bowl of cold water t cool it down quickly. Since the container store heavily stained tomato sauce, I assume it is stainproof. But you can't really tell since it's black. Also, it is microwavable; hence, will be easy to use microwave to defrost. Cover with a little piece of aluminum foil. Write down the type of food on a little piece of paper and store together in a ziplock bag. The bag can then be reused without cleaning. Store in freezer.

*Keep the paper package like this lasagna. Can be reused for cutting vegetables over a chopping board to prevent cutting the board.