Bruer recommend using about 60 grams (roughly 2/3 cup) of coffee at a medium grind, to 24 ounces of mixed ice and water - we recommend 12 ounces of each. Add your coffee to the brewing chamber, and level them by gently shaking the brewing tower. Add a paper filter to the top of the grounds, and moisten with just an ounce or two of cool water. Now, add the plug and valve into the tower, and twist the valve so it is aligned with the opening in the plug. Carefully add your ice and water to the top of the tower, and begin adjusting the flow valve.
Rotating the valve clockwise, adjust the drip rate until it hits about 1 drop per second. A slower drip will result in a longer brew time, which can help extract even more flavor from lighter roasts of coffee. The opposite goes for darker roasts: you may find you want the drips to fall just slightly faster than 1 per second. Be careful not to allow the water to drip too quickly, however, as 2 drips per second or more can result in a weak-tasting brew. Once brewed, simply remove the tower, gently push the lid into the carafe, and store in the refrigerator for up to a week