How was food dating treated for most products immediately following its initial voluntary appearance in the mid-20th century?

Answer

It remained entirely voluntary, left up to the individual producing company

The evolution of food dating was characterized by its voluntary nature for several decades after its inception. There was no overarching federal mandate forcing all manufacturers to implement dating systems overnight. This lack of uniformity meant that the decision to apply a date rested entirely with the individual company producing the item, resulting in a situation where identical products from competing manufacturers might carry differing dating statuses or use entirely different labeling conventions.

How was food dating treated for most products immediately following its initial voluntary appearance in the mid-20th century?
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