Wikipedia
Mega-purple
MegaPurple is a brand name for a food additive produced from grapes by Canandaigua Concentrates of Madera, California, a division of Constellation Brands. The process used for producing the additive is proprietary. Based on the descriptions of effects to wines by winemakers it is likely produced by a series of processes such as vacuum distillation, fractional distillation and solvent extraction. The product is one of a series of concentrates marketed as kosher additives for food with names such as Mega "Cherry Shade" Grape Juice Concentrate, Mega Purple Grape Juice Concentrate, Mega Red Grape Juice Concentrate