It's a strange and beautiful red fruit originating from Vietnam, where it is harvested in December and January. the fruit is cultivated throughout Southeast Asia and China, often as an ornamental plant due to its magnificent color. Also known as Chinese bitter cucumber, cundeamor and bhat karela, Gac fruit is rich in the antioxidants beta-carotene, lycopene (seventy times more than in tomatoes), and zeaxanthin. It contains the highest concentration of beta carotene of any known fruit or vegetable (ten times as much as carrots).