Last week I was in Detroit, Michigan for a family reunion, and while I was there I got to raid my grandmother’s cedar chest for old treasures. This is an advertising brochure for the electric milk condenser my great-grandfather invented:
“This machine will evaporate any desired percentage of the water; so as to concentrate the milk three to one, or to any consistency that may be required… IT WILL PERFECTLY SUPERHEAT PLAIN CONDENSED MILK… Owing to the desirable temperature at which the Ruff Process condenses the milk, it adds to the digestibility and highly nourishing qualities of the product and makes it an ideal food for infants and invalids.”
