Which food packaging innovation was first introduced in the 1950s by Tetra Pak and revolutionized the storage of liquid foods like milk and juice?

In the world of food packaging, innovations have dramatically changed how we preserve and consume food products. One particular packaging breakthrough revolutionized the food industry by extending shelf life and changing how consumers interact with certain products. Test your knowledge about this significant packaging innovation that transformed food preservation and convenience!

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Aseptic carton packaging (allowing unrefrigerated storage of liquids)
Vacuum-sealed plastic pouches (sous vide packaging)
Modified atmosphere packaging (MAP) with controlled gas levels
Retort pouches (heat-resistant flexible packaging)