Pet, Inc.

Pet, Inc., was an American company that was the first to commercially produce evaporated milk as a shelf-stable consumer product and later became a multi-brand food products conglomerate. Its signature product, PET Evaporated Milk, is now a product of The J.M. Smucker Company. PET Dairy is a regional brand of fresh and processed dairy products in the Southeastern United States made by the Land-O-Sun division of Dean Foods. Many of the remaining brands once owned by Pet, Inc. are currently part of General Mills.

Evaporated milk was a popular product before refrigerators were common in homes, but is now a niche product mainly used in baking and other recipes. PET anticipated the change, and transformed into a food products conglomerate through a series of acquisitions. It was also the subject of acquisitions, primarily due to its Old El Paso line, Progresso line, and other brands, and not because of the evaporated milk. Progresso soup cans presently maintain the copyright notice of Pet, Inc.

John Baptist Meÿenberg (1847-1914) was an operator at the Anglo-Swiss milk condensery at Cham, Switzerland. Anglo-Swiss made sweetened condensed milk. From 1866 through 1883, Meÿenberg experimented with preservation of milk without the use of sugar. He discovered that condensed milk would last longer if heated to 120°C (248°F) in a sealed container, and hence could be preserved without adding sugar. When Anglo-Swiss declined to implement Meÿenberg's work, he resigned from the company and emigrated to the United States. John Meÿenberg first moved to St. Louis, but soon transferred to Highland, Illinois, due to its large Swiss population. On 25 November 1884, U.S. Patents 308,421 (Apparatus for Preserving Milk) and 308,422 (Process for Preserving Milk) were issued to Meÿenberg. Meÿenberg associated with various local merchants, including John Wildi, Louis Latzer, Dr. Knoebel, George Roth and Fred Kaeser and, on February 14, 1885, organized the Helvetia Milk Condensing Company.

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