My daughter taught me this trick to lift dark brown coffee rings out of ceramic mugs with 0 effort. Here’s how it works

none other than the humble denture tablet. These tablets are designed to remove stains and disinfect dentures, so they are perfectly suited to attacking the tannins and oils in coffee stains.

All you need is one denture tablet and some hot water. The effervescent action of the tablet helps lift and dissolve the stains without any scrubbing, making it an effortless cleaning solution.

Here’s how you can use this trick: First, fill your stained mug with hot water, leaving some room at the top. Drop in a single denture tablet and watch as it begins to fizz and dissolve. The effervescent action will start working on the stains immediately.

Allow the solution to sit undisturbed for at least an hour. If your stains are particularly stubborn, you can let it soak overnight. Once the time has passed, simply pour out