title_body: Difference between cold brew and iced coffee?
upvoted_answer: Iced coffee is simply hot brewed coffee or espresso that has been poured over ice, and possibly mixed with contaminants like milk and sugar ;) 
  Cold brew is coffee that has been brewed with cold water over a long period of time, usually 12-24 hours. The process eliminates a lot of the acidity in coffee, and produces a sweet, flavorful coffee when done properly. Some people like cold brew more than hot coffee, it's all just personal preference.