About this episode
The modern dishwasher traces its origins to 1886 and socialite Josephine Cochrane, who invented the machine in Shelbyville, Illinois, to prevent her servants from chipping her fine china. While the concept of a "scullery" (a dedicated cleaning room) dates back much further—derived from the Old French escuelerie and Latin scutella—Cochrane’s specific innovation was using water pressure rather than scrubbers to clean dishes. Her design won a top prize at the 1893 World's Columbian Exposition for its mechanical construction and durability.
Today, dishwashers are highly efficient, with Energy Star certified machines using only three to four gallons per load compared to the estimated 27 gallons used by hand washing. Manufacturers ensure this efficiency by testing against industry-standard "stubborn soils" like dried egg yolk, burnt-on cheese, and baked-on oatmeal. Beyond cleaning, the appliance's unique environment—reaching 140–150°F—can even be used to poach salmon. To maximize performance, users should place plastics on the top rack to avoid the heating element, face dishes toward the center, and skip the pre-rinse to allow enzymes to properly target food particles.
Want to learn more? Head over to my website www.funfactsdailypod.com and be sure to listen to my other podcasts Who ARTed: Weekly Art History for All Ages or Art Smart. For family fun, check out my son's podcast Rainbow Puppy Science Lab
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