Here is a quick, easy, inexpensive way to seal foods airtight in a plastic-bag. All you need is a zipper lock bag, and a tub or pot of water. If using this method for storage, we would suggest using freezer bags for a better seal. For cooking sous vide, do not use this method for foods that need to cook longer than a couple of hours.
How to Seal Foods Air Free Without a Vacuum Sealer