I've had coffee left in the pot I brewed that I just pour into a container and stick it in the fridge. Later in the afternoon drink it cold with ice and a splash of cream. Not sure if that is cold brew or iced coffee but it tastes fine to me.They are. Cold brew is brewed with cold water. Iced coffee is brewed hot and poured over ice.
If I want to cold brew something it's tea. Love iced tea too.