"Among the worst kitchen items to clean, anything your precious morning cup of joe touches tops the list, including said cup. That's because, in addition to its energizing caffeine and delicious, complex flavors, coffee also contains components that make it an especially stubborn stain contributor. It has chromogens, compounds that shape its flavor profile and also provide its brown color. It's basically in coffee's DNA to stain everything from your mugs to your coffee maker."
"This is because it contains sodium bicarbonate and citric acid. The former is baking soda and the latter is acid that works like lemon juice or vinegar - all of which are proven cleaning heroes. Sodium bicarbonate is gentle but abrasive, able to break down stains without damaging surfaces. Citric acid can break down the chemical composition of stains, making it all the easier for sodium bicarbonate to scrub up."
Coffee contains chromogens that create persistent brown stains on mugs, carafes, and coffee makers. Sodium bicarbonate (baking soda) provides a gentle abrasive action that helps lift stains without damaging surfaces. Citric acid functions like lemon juice or vinegar and breaks down the chemical composition of stains, making them easier to remove. Alka-Seltzer tablets combine these two ingredients and can be used as a quick, affordable, and chemical-free cleaner. For coffee makers, add three effervescent tablets to the water reservoir, wait about 15 minutes, run a brew cycle, and then run plain water cycles to rinse.
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