Cold Brew Coffee is coffee that's brewed with cold/room-temperature water. Many people confuse Cold Brew Coffee with Iced Coffee. This is a common misconception. Cold Brew Coffee is great for BOTH Hot & Iced Drinks. True Cold Brew is a super concentrated extract, to be diluted for drinking.
Once the concentrate is extracted, you can use whatever ingredients you'd like to make the ultimate cup of coffee -- Hot OR Iced. It's all up to you!