How to remove most water from food when cooling them down before putting to a refrigerator?
The answer to your question is pure and simple. Condensation. Anytime you put anything into plastic that is not cold it will cause it to sweat. The best way to freeze anything is to place it in your freezer, uncovered and unwrapped immediately or within 5 to 10 minutes after removing it from the oven. Once it is frozen, and that should take anywhere from1 to 2 hours depending on what you are freezing, remove it from freezer and wrap quickly and immediately, making sure it remains well frozen, then return to freezer.This is called flash freezing and is the best way to keep the integrity of your food intact.  When defrosting your food, especially if it is something like a piece of frosted cake, unwrap the item as soon as you remove it from your freezer, then let it defrost. Hope this helps!