How do you remove air?

To remove air from a container, you can use a vacuum pump, which creates a low-pressure environment by extracting air, or seal the container tightly and use a vacuum sealer that removes air before sealing. Alternatively, you can submerge the container in water and invert it to allow air to escape before sealing it underwater. For smaller items, using a straw to suck out air before sealing a bag can also be effective.