If your favorite mug or cup is showing signs of your coffee obsession, these simple tricks will make it look like new.

I know when this heat level is reached because we live in the future and this magical coffee mug is synced to my iPhone. It’s not an exaggeration to say this is a life-changing product that I ...

since heat accelerates chemical reactions. The tannin compounds in the hot coffee will more strongly adhere to the cup material. Leaving the coffee in the cup or mug for an extended period also ...