Long ago, special cooking techniques such as sous vide (pronounced as sue-veed) are limited to the experts. It goes more than the regular cooking methods as its needs precise control of the temperature to produce excellent results. However, what was once limited to restaurants can now be achieved via home cooking -- thanks to vacuum sealers! What Are Vacuum Sealers And How Do They Work? Vacuum sealers have existed for some time, however, not everyone knows what it is and how it is used. It doesn't use any vacuum but it needs a lot of suction though. A type of bag heat sealer is utilized for the purpose of specialty packaging to protect and preserve different kinds of food such as coffee products and dried foods. It works by taking all the air out of the plastic bag; when there's no air, the food will last longer since there is no oxygen. Once the air is removed from the plastic, the vacuum sealer will "seal" or close the bag by melting the top of the plas...