Which food preservation product was specifically developed for Napoleon's army before becoming a civilian retail success?

Throughout military history, innovations in field rations have significantly impacted troop morale and combat effectiveness. One product development stands out as particularly revolutionary, changing how soldiers were supplied in the field and influencing civilian food preservation techniques for decades to come. This poll tests your knowledge of a pivotal moment in military supply chain history that merged product innovation with battlefield necessity.

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Canned foods (developed by Nicolas Appert)
Freeze-dried coffee (developed by Satori Kato)
Powdered milk (developed by Marco Polo)
Vacuum-sealed jerky (developed by Count von Rumford)