The first rule in the kitchen is to make sure you keep your appliances clean.
According to a recent report by CBS Pittsburgh, however, many coffee drinkers forget to scrub down their Keurig machines.
The local news team, working alongside investigators from Chicago and Dallas affiliates, tested over 20 machines from ordinary kitchens.
Samples taken from the K-Cup slot, coffee maker spout and tray revealed a plethora of nasty bacteria.
In one trial, traces of E. coli, streptococcus and staphylococcus were among the 4.6 million bacteria and mold colonies living in the machines. It's not exactly what you'd expect with your morning cup of caffeine.
Of course, many pointed out the trials are extremely limited and didn't test the amount of bacteria in coffee brewed by the Keurig.
However, cleaning and regularly descaling your single-serving coffee maker are probably good habits to start.
The Internet is packed with on-the-cheap tutorials that are easy to follow, and they'll ensure your Joe tastes fresh and won't make you sick.
According to Huffington Post, Keurig recommends scrubbing the machine down every three to six months.