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Coffee stains on mugs are easy to remove using baking soda or hydrogen peroxide. Stains form when coffee residue clings to mug surfaces; quickly rinsing after use can help prevent buildup. Denture ...

Whose bright idea was it to make the insides of coffee mugs white? As a specialty coffee expert, I'm all too familiar with coffee stains in general, but especially the ones that mark the insides of my ...