Is a blend of the three most common acids around in fruit: citric, malic and tartaric. ItÛªs typically used in wines that are naturally lacking in acid, which typically results in a flat tasting wine. Acid Blend adds liveliness to the wine and helps to bring out its fruity flavors. Having a proper level of acidity will help establish a vigorous fermentation. Before you add any acid to a wine you should first check its acid level with pH strips or an acid test kit.