Abstract: Methods of debittering and coloring black ripe olives include the steps of treating the olives with iron solution at elevated temperature, in the absence of oxidizing agents, followed by the step of aerating the solution. The unique coloring method permits a relatively high concentration of lye to be used in the debittering process which precedes the coloring process, resulting in significant overall time savings for the combined processes. A three day debittering and coloring olive process is described which results in consistent, high quality product.