Stella Rosa Red Apple contains natural carbonation. The juice is fermented in Charmat-style, pressurized tanks. As the alcohol is created, so is the carbonation. Once the desired sweetness is achieved, the wine is centrifuged and bottled. The alcohol level stays at approximately 5.5% and contains 10% residual sugar. Its natural acidity and low pH strike the perfect balance with the wineÃ¢â‚¬â„¢s natural sweetness.