Most flight attendants avoid airplane coffee and tea because the water tanks used aren't regularly cleaned and may contain ...

Once the coffee beans have been ruled out, the next most obvious ingredient that could be at fault is the water—the very same water that, according to a 2012 EPA report, tested positive for ...

The Kitchn investigated and found out why. The usual culprit in a case of not-so-great coffee is the beans: low-quality beans naturally lead to a low-quality beverage.