Iced Coffee Done Right. Gevalia Cold Brew iced coffee concentrate is specially crafted to make smooth, flavorful iced coffee just the way you like it. Starting with the finest 100% Arabica coffee beans from all around the world, we use a cold brewing process which increases flavor and delivers a rich, naturally concentrated coffee without any bitterness or acidity. Start with equal parts milk or water and Gevalia cold brew, sweeten to taste, and customize for up to 64 oz. of deliciously different iced coffee.