After drinking coffee, the cups are washed for hygienic purposes and placed upside down on the coffee maker.
The fact is that coffee is an ideal environment for mold growth, and dairy products increase the danger of bacteria.
Brown spots that form on the inside of the cup may eventually become moldy and develop a bitter odor.
Additionally, the cup will become sticky over time and subsequent coffee may taste rancid.
The cup can harbor germs that remain active for up to three days.
Therefore, the frequent assertions that a coffee cup should be washed less often are unfounded.
To clean a cup, simply rinse it with hot water if it is ceramic, glass or stainless steel.
The coffee cup should be washed with soda every time when using milk and sugar.
