Many lemon tea and summer black grape flavored drinks are usually purple or deep purple. Duoduo Lemon Tea Xiahei Grape Flavor Beverage is added with Xiahei Grape Juice or Xiahei Grape Extract, among which Xiahei Grape is a common grape variety with purple-black skin and lavender or deep purple pulp, so the beverage made from it will also appear purple or deep purple.