Grapes are one of the most versatile fruits on the planet, used for everything from winemaking and distilled spirits to dried fruit, cooking oils, vinegar, skincare products, and even soil fertilizer. While most people think of wine first, the grape industry generates a surprisingly wide range of products from every part of the fruit: the juice, the skin, the seeds, and even the leftover pulp.
Wine and Winemaking
The single largest use of grapes worldwide is wine production. Thousands of grape varieties are cultivated specifically for this purpose, broadly split between red and white wines depending on the grape’s color and whether the skins stay in contact with the juice during fermentation. The basic process is straightforward: grapes are crushed, the juice ferments as natural sugars convert to alcohol, and the resulting wine is aged to develop flavor. What makes wine endlessly varied is the grape variety, the climate, the soil, and the decisions a winemaker makes along the way.
Distilled Spirits
Grapes are the base ingredient for several major categories of spirits. Brandy is the most well-known, made by distilling finished wine into a higher-proof liquor. Cognac and Armagnac are simply brandies from specific French regions with strict production rules.
Grappa takes a different approach entirely. Instead of distilling wine, producers use the leftover skins, seeds, and stalks from winemaking (called pomace) and distill those via steam or a water-bath method so the solids don’t burn. No water is added during fermentation or distillation. The result is a sharp, aromatic spirit that transforms what would otherwise be waste into something valuable.
Peruvian pisco sits at the opposite end of the process. Grapes are grown specifically for pisco production, and only the fresh juice is used. The skins, seeds, and stalks are discarded before distillation, which typically happens in copper pot stills heated by direct flame. No water is allowed in the final product.
Raisins, Sultanas, and Currants
Drying grapes into shelf-stable snacks is one of the oldest food preservation methods. The three main types of dried grapes differ in the variety used and how they’re processed.
- Raisins are dried for about three weeks from a range of grape varieties. In the US, Thompson Seedless grapes are the standard. In Australia, larger varieties like Muscat and Lexia are used instead.
- Sultanas also come from Thompson Seedless grapes but are coated in an oil-based solution before drying, which speeds up the process significantly. Without the coating, they take the full three weeks.
- Currants (specifically Zante currants) are made from tiny seedless grapes called Black Corinth or Carina. They’re dried for up to three weeks and end up much smaller and more tart than raisins.
Fresh grapes have a low glycemic index (55 or below), meaning they release sugar into the bloodstream gradually. Dried grapes like raisins jump into the moderate range (56 to 69), which matters if you’re watching your blood sugar.
Balsamic and Wine Vinegar
Traditional balsamic vinegar is made from a single ingredient: grape must, which is the sweet juice of freshly pressed grapes. The must is boiled down to a concentrate, then fermented, acidified, and aged in wood barrels for 12 to 25 years or longer. The result is a thick, complex condiment that can cost well over $100 per bottle.
Most balsamic vinegar on grocery store shelves takes a shortcut. Producers blend concentrated grape must with wine vinegar to speed up acidification, allowing high-volume production in a fraction of the time. The ratio of sweet must to tart vinegar determines how sweet the final product tastes. Some producers offer a middle-ground product called Condimento Balsamico, which is grape-must vinegar aged fewer than the 12 years required for official traditional certification.
Standard wine vinegar, meanwhile, is simply wine that has been allowed to ferment further until bacteria convert the alcohol into acetic acid.
Grape Seed Oil
Grape seeds are a byproduct of winemaking, and pressing oil from them turns agricultural waste into a product used in both kitchens and skincare. The most common extraction method is cold pressing, where whole seeds are pressed in a hydraulic press at low temperatures to preserve oil quality. Seeds need to have a moisture content below 10% for this to work. Some manufacturers use chemical solvents like hexane to extract more oil, while newer methods rely on supercritical CO2 or hot water to avoid solvents entirely.
In the kitchen, grape seed oil has a high smoke point and a neutral flavor, making it useful for sautéing and frying without overpowering other ingredients. In skincare, it pulls its weight in several ways. The oil is rich in linoleic acid, a fatty acid that strengthens skin cell membranes and helps prevent clogged pores. Its light texture absorbs quickly without leaving a greasy residue, which makes it popular as a moisturizer. It also has astringent properties that can help firm the skin, and its antioxidant content offers some protection against UV damage by reducing free radical levels in skin cells.
Health-Promoting Compounds
Grapes contain a well-studied antioxidant called resveratrol, found exclusively in the skins. This compound has attracted significant research attention for its potential effects on several major health conditions. In lab studies, resveratrol inhibits the growth of human cancer cell lines from breast, prostate, stomach, colon, pancreatic, and thyroid cancers. Two placebo-controlled trials found that a grape supplement containing 8 mg per day of resveratrol, taken for one year, improved markers of inflammation and artery health in people at risk for cardiovascular disease and in patients with established heart disease.
Short-term supplementation with resveratrol has also improved blood sugar and cholesterol markers in patients with type 2 diabetes in randomized controlled trials. Animal studies suggest neuroprotective effects that could be relevant to conditions like Alzheimer’s, though human evidence on that front remains limited. These findings help explain why grapes, red wine, and grape-derived supplements all occupy a prominent space in conversations about heart health and longevity.
Agricultural and Industrial Reuse
After grapes are pressed for wine, the remaining mass of skins, seeds, and stems (grape pomace) represents a significant volume of organic waste. Rather than sending it to landfills, the wine industry increasingly repurposes it. Grape pomace is rich in organic carbon and nutrients, making it a promising alternative to synthetic soil amendments. When composted or fermented before application, it can boost soil organic matter, improve nutrient availability, and enhance the physical and chemical properties of farmland. This kind of circular reuse transforms a disposal problem into a resource for sustainable agriculture, reducing the need for chemical fertilizers while improving soil health over time.
Between wine, spirits, vinegar, dried fruit, cooking oil, skincare ingredients, health supplements, and soil amendments, nearly every part of the grape finds a use. Few fruits generate an industry this diverse from a single harvest.