Even those of us who use our coffee makers on a daily basis probably aren’t cleaning them as much as we should be. Unfortunately, research published in Scientific Reports suggests that our coffee makers are a veritable hotbed of bacterial activity, and we might just be ingesting some of that icky stuff along with our dark roast.
So, how should you combat all that bacteria? A monthly vinegar rinse should do it. Simply fill your coffee maker’s reservoir with a few tablespoons of white vinegar mixed with water, run it, and run it once more with only water to ditch any lingering vinegar smell.