Cold Brew coffee; isn't that a new catchphrase? You hear it everywhere, and it has a bunch of definitions. I've seen Hario iced pour overs called cold brew (I call those iced coffees). I've seen some weird bottled drink that tastes awful called a cold brew. I've also seen an iced Toddy called cold brew.
I'm going to start by saying, these couple of paragraphs are not going to give you nearly enough information about coffee cupping. I'm basically going to tell you some of what I use to make my images and descriptions.