system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do coffee makers suggest you start with cold water?

If the machine makes it hot in the end, whats the purpose of using cold water?  Specifically is there any scientific reason that using cold water could the way the coffee turns out in the end?
gpt
Hot water is more likely to pick up minerals from your pipes. It will have a higher metal concentration than cold water, so cold water is "cleaner".

Not sure how it impacts the taste of coffee but it is fully reasonable that it could, they are just recommending cleaner water.