Dishwasher
Thanks to the dishwasher, even busy people can cook like chefs: Use as many bowls as you like for mise en place, serve a crowd of guests, and don’t bat an eyelash over the cleanup. The first model was introduced in the late 1800s, but at the time consumers didn’t have much demand for it—homemakers (that is, women) claimed to enjoy washing dishes by hand. The machines also used a huge amount of hot water, and many homes didn’t have water heaters that could provide a sufficient supply. By the 1950s, when the technology had improved and women’s attitudes toward housework had shifted in favor of convenience, the market for dishwashers began booming. Today, while the appliances are common, ownership correlates strongly with income level: Only 18 percent of the lowest-income households have dishwashers, compared to 83 percent of the highest-income households.
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