In addition, it was Dr. W. H. Cook from the Canadian National Research Council, a Director of the Applied Biology Division who came up with several methods to meet the emergency food requirement for troops during World War II. His invention was a special refrigerated storage system used to transport close to 20% of the perishable foods to Britain. He also devised an improved process for drying whole egg powder.
The Great Canadian Invention Series: Mashed Potato Flakes and Other Instant Food Processes
It was Dr. Edward Asselbergs from the Canada Department of Agriculture in Ottawa who in 1961 develop a process for making instant mashed potato flakes that tasted like real homemade version of mashed potatoes. From this idea Dr. Asselbergs moved to make instant meat, chicken, fish and cheese products. If you interested Google Patent search engine is excellent for listing all kinds of patents, and here what I found for mashed potato flakes: PREPARATION OF DEHYDRATED COOKED MASHED POTATO Patent number: 3260607 Issue date: Jul 1966 Inventor: Asselbergs et al.