Are these bags reusable

The bags are disposable. You will find 3 pcs bags in one package.

Con que maquina para sellar al vacío funciona?

They work with all vacuum machines. Just need a little practice and technique. These are not vacuum bags. It is not important to completely extract the vacuum. Most importantly, 70-80% of the meat is in contact with the surface of the bag. The reason why you need to create a vacuum is merely to ensure contact between the meat and the surface of the bag. The required bond forms within the first 5-7 days of the dry-aging process. Small pockets of air will not cause any problems in fact, they are often unavoidable. But, to ensure safe dry-aging, you must ensure at least 70-80% contact. Also due to its design, the DryAgedBag may require you to seal it two to three times in the same spot to achieve a proper seal it is different from a regular vacuum bag in this regard.

Can u season or salt the meat prior to shrinking the bag?

DO NOT season or salt your meat prior to shrinking the bag. Technically, salt isn't used to age beef. The purpose of aging beef is to improve tenderness and enhance flavor. Aging gives the natural enzymes time to break down the muscle and connective tissue, which tenderizes the meat. Salt dries the meat. We recommend using season and salt only before frying meat. This will give you the best result.