A method for producing an ionized water product for coffee comprises the steps of introducing source water to an ionization system, passing the source water through one or more reaction vessels, wherein one or more ionic species are introduced into the source water, and combining products of one or more reaction vessels to produce the ionized water product having between about 10 ppm to about 40 ppm magnesium ions, about 10 ppm to about 40 ppm calcium ions, and about 40 ppm to about 90 ppm total of bicarbonate and carbonate ions.