Bloodberry
Bloodberries (Sinpio in Thalassian and Darnassian, or red currants elsewhere) are a common red berry that grows in the Northern Hemisphere of Azeroth, named as its berries appear like beads of blood.
A particular species on the island of Quel'danas has the capability of amplifying magic. This was likely due to prolonged exposure to the Sunwell. These berries can then be brewed into an elixir.