Mega Purple is a

grape juice Grape juice is obtained from crushing and blending grapes into a juice, liquid. In the wine industry, grape juice that contains 7–23 percent of pulp, skins, stems and seeds is often referred to as ''must''. The sugars in grape juice allow it t ...

concentrate A concentrate is a form of Chemical substance, substance that has had the majority of its diluting agent or diluent (in the case of a liquid: the solvent) removed, such that the substance becomes the majority of the composition. Typically, this w ...

by Vie-Del Company of

Fresno Fresno (; ) is a city in the San Joaquin Valley of California, United States. It is the county seat of Fresno County, California, Fresno County and the largest city in the greater Central Valley (California), Central Valley region. It covers a ...

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

. It is used as a food additive. 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 Vacuum distillation or distillation under reduced pressure is a type of distillation performed under reduced pressure, which allows the purification of compounds not readily distilled at ambient pressures or simply to save time or energy. This te ...

fractional distillation Fractional distillation is the separation of a mixture into its component parts, or fractions. Chemical compounds are separated by heating them to a temperature at which one or more fractions of the mixture will vaporize. It uses distillation ...

, and

solvent extraction A solvent (from the Latin language, Latin ''wikt:solvo#Latin, solvō'', "loosen, untie, solve") is a substance that dissolves a solute, resulting in a Solution (chemistry), solution. A solvent is usually a liquid but can also be a solid, a gas ...

. The product is one of a series of concentrates marketed as

kosher (also or , ) is a set of dietary laws dealing with the foods that Jewish people are permitted to eat and how those foods must be prepared according to Jewish law. Food that may be consumed is deemed kosher ( in English, ), from the Ashke ...

additives for food with names such as Mega "Cherry Shade" Grape Juice Concentrate, Mega Purple Grape Juice Concentrate, Mega Red Grape Juice Concentrate

In winemaking

There has been some discussion in the industry regarding the use of additives such as Mega Purple to bolster or enhance sensory attributes such as color, taste and mouth feel. It is reported that as much as 20% of the total production of such additives is related to wines. According to journal reports, Mega Purple is used by almost every low- to moderate-value wine producer (below US$20 per 750 ml bottle) to help standardize the bottled product ensuring a more uniform product.Berger, Dan, ''Wines & Vines'' (March 2006)
Mega Purple
/ref> It is produced by concentrating the ''teinturier'' grape Rubired, a cross between

Alicante Ganzin Alicante Ganzin is a red French wine grape variety. Unlike most ''Vitis vinifera'' wine grapes, Alicante Ganzin is a teinturier with dark flesh that produces red juice. Most varieties used to produce red wine, such as Cabernet Sauvignon, Syrah, ...

and

Tinta Cão Tinta Cão is a red Portuguese wine grape variety that has been grown primarily in the Douro region since the sixteenth century. The vine produces very low yields which has led it close to extinction despite the high quality of wine that it can ...

, has 68%

sugar Sugar is the generic name for sweet-tasting, soluble carbohydrates, many of which are used in food. Simple sugars, also called monosaccharides, include glucose Glucose is a sugar with the Chemical formula#Molecular formula, molecul ...

and sells for approximately $135 a gallon. Mega Purple has raised some controversy within the wine consuming community as its use is considered to be akin to adulterating a wine. Others, such as John Williams, winemaker for Frog's Leap Winery, has stated that the need for its use is evidence of poor

viticulture Viticulture (, "vine-growing"), viniculture (, "wine-growing"), or winegrowing is the cultivation and harvesting of grapes. It is a branch of the science of horticulture. While the native territory of ''Vitis vinifera'', the common grape vine ...

and/or

winemaking Winemaking, wine-making, or vinification is the production of wine, starting with the selection of the fruit, its Ethanol fermentation, fermentation into alcohol, and the bottling of the finished liquid. The history of wine-making stretches over ...

.Williams, John, sarep.ucdavis.ed
Science of Sustainable Viticulture

References

{{Reflist Food additives Winemaking Grape juice