A limited number of studies have reported anthocyanin copigmentation in actual food systems due to its inherent phytochemical complexity; yet extensive work is reported using model systems with a diversity of anthocyanins and cofactors. In food systems it is not uncommon for anthocyanin concentrations to exceed those of naturally occurring cofactors, thus color improvement may result from external cofactor addition. Using wine as a model, darias-Martin, Carrillo, Dias, and Boulton (2001) demonstrated that pre-fermentation addition of simple phenolics as exogenouse cofactos (caffeic or catechin) could substantively improve wine color and stability. The incortion of exogenous cofactors also serves to enhance other functional properties of a food, such as reduced oxidation or increased health-promoting benefits. However, most polyphenolics when used alone not foods, yet