Does it seem like your coffee mugs never come clean no matter how many times you run them through the dishwasher? The tannins in coffee are very good at penetrating porous ceramic (as well as our ...

Add Yahoo as a preferred source to see more of our stories on Google. Some things look better with a bit of wear and tear — coffee mugs aren’t one of them. As a former barista, I can tell you, there’s ...

Add Yahoo as a preferred source to see more of our stories on Google. No matter how often you use them, your coffee cups and mugs can look brand new again. Did you know that 73% of Americans drink ...

There's a running joke in my family that centers around my older sister's absolute refusal to use a cup or mug with ingrained coffee stains. Although a cup has clearly been washed thoroughly, she ...

The dark brown stain in your mug or cup is brought about by tannins. Tannins are plant compounds found in tea and coffee (and some other foods and drinks) and are what give these hot drinks and ...