Oil to which an equal amount of water has been added, perhaps salt water, shaken, and exposed to the sun in a glass jar or tray for a few weeks. The vessels are typically loosely covered to exclude dirt, but permit air. The oil and water must be recombined every day for the first week. Length of exposure time to the sun varies according to the season and to the intended consistency and color desired. At the end of the treatment, the oil is separated from the water by means of a funnel.
