Just like green and black tea are made from Camellia sinensis plant, Oolong tea is also made from the mentioned plant's leaves. The only factor that differ this tea from other variants is the processing method. The hand-plucked leaves are partially oxidized to make oolong tea, that contains antioxidants, minerals and vitamins, like theaflavins, thearubigins, magnesium, niacin, sodium, potassium and manganese. This fresh oolong herbal tea combines the flavor and taste of Oolong tea and white grapes. The brewed tea tastes good when chilled.