Coffee can stain cups and mugs due to the presence of compounds called tannins, a type of polyphenol that is naturally present in coffee beans. When coffee is brewed, tannins can adhere to the ...
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 ...
“Pumpkin stains are notoriously tough to remove due to the tannins and carotenoids, which are natural pigments found in pumpkins. Acting quickly is key to preventing the stain from setting ...