Distilled water is basically the “old school” method—think of it as water that’s taken a steamy trip and come back clean. You boil the water into steam, then cool that steam back into liquid. The impurities, like minerals and germs, get left behind in the pot because they don’t vaporize as easily. This process removes most contaminants, but it’s not perfect.
Here’s the ironic part: distillation actually takes a lot of energy. Boiling massive amounts of water isn’t exactly eco-friendly, but hey, it works for things like car batteries and steam irons. It’s also the stuff you usually buy for baby formula, because it’s very pure. But distilled water can still have trace amounts of organic compounds that boil at the same temperature as water. Sneaky, right?
So, if you need water that’s basically sterile and mineral-free, distillation is your friend. Just don’t expect it to remove absolutely everything—like those weird volatile chemicals that might linger. (Yes, I’m looking at you, mystery tap water.)