I don’t understand what the point of it is or how to consume it.

I have read instructions on how to make it. I can make it as well though of course I am no expert.

1. I just don’t know why someone would have it over normally brewed coffee. Is the taste different? I am not the kind of person who can tell difference easily.
2. Let’s say you have cold brewed a pot overnight. What do you do with it? Can you heat it before drinking it? Or do you have to drink it cold?

Thanks.