Lait Pur Sterilise Condensed Milk Poster
The idea for a portable canned milk product that would not spoil came to Gail Borden during a transatlantic trip on board a ship in 1852. The cows in the hold became too seasick to be milked during the long trip, and an immigrant infant died from lack of milk. Borden realized his goal in 1854. His first condensed milk product lasted three days without souring. He first thought the condensing process of the milk made it more stable but later on realized it was the heating process that killed the bacteria and microorganisms that cause spoilage.