Carson By mollylewis 1950 started preserving milk 1950 experimented with preserving and adding artificial flavors 1950 freeze drying was also experimented a lot with during this time time Period: Jan 1, 1950 to Jan 1, 1990 Mid-20th Century to Late 20th Century 1960 a good amount of people would also start using instant food around this time 1965 food processor 1965 the microwave started to become more affordable and easy to find. 1970 microwave became extremely popular