How to remove coffee stains from mugs — 4 pro-approved steps I've tried and tested myself

Two pictures of white coffee cups on wooden chopping boards - one with brown stains in it and one clean.

Are you drinking out of a coffee cup while reading this, and thinking it could use some TLC? Don't stress — it's actually so easy and quick to do.

I asked professional cleaners for four easy steps for doing this and followed them myself on my boyfriend's mug. He drinks black tea and coffee, so his go-to cup was in serious need of a makeover. I did with just baking soda, water, and a sponge, and was amazed by the results.