Besides perfecting the freezing method, what co-invention was necessary to transition Birdseye's products beyond direct sales?

Answer

Specialized, low-temperature showcase for retail display

The successful commercialization of flash-frozen products required more than just efficient freezing; it demanded infrastructure for storage and presentation at the retail level. Birdseye recognized that to sell novel products like flash-frozen fish, peas, and meats to the general public, retailers needed a way to showcase them safely above a standard storage chest. Therefore, he invented specialized refrigerator display cases. This innovation effectively created the concept of the refrigerated retail display, or the frozen food case, providing the necessary means for products to be visible, accessible, and maintained at safe, low temperatures for consumer purchase outside of direct-from-chest sales.

Besides perfecting the freezing method, what co-invention was necessary to transition Birdseye's products beyond direct sales?
foodinventionHistorytechnologypreservation