2, jujube juice, combining modern technology, extracting the essence of jujube and other fruits, sweet and sour, moist and natural. Wild jujube. Zizyphus jujuba is a deciduous tree of Rhamnaceae, which bears fruit in autumn. The fruit is round, purple and sour. Its jujube kernel tastes sweet and sour, which can soothe the nerves and nourish the heart. Indications: insomnia, dreaminess, restlessness, palpitation, forgetfulness and neurasthenia. Its jujube meat tastes sour and can promote food digestion.