Cold brewing reduces the amount of acid in coffee. The coffee concentrate can be used to make iced coffee, hot coffee, and milk drinks like lattes and macchiatos. Comes with a coffee bowl, water bowl, filter pad, rubber stopper, grounds guard, measuring cup, 1.5 liter decanter, the invaluable Tip N Pour dispenser and 2 sample paper filters. This item is extremely simple, easy to use, and brews excellent coffee.