A significant number of certified organic wines on the market are those that were made with organically grown grapes, meaning that the winery only uses grapes that were farmed using organic principles (e.g. no pesticides, chemicals). In the U.S., these wines often carry certification labels from entities such as the California Certified Organic Farmers (CCOF). While almost all wines include some sulfites naturally, many wineries using organic grapes will add additional sulfites in the actual winemaking process for various reasons, including to assist in ageability. Only organic growers who have not added any additional sulfites in the winemaking process can be certified organic by the USDA, and often display the USDA Organic label on the bottle itself.
While many winemakers are turning to organic and sustainable winemaking practices, all wines must be certified to use the term 'organic' on the label.
