Terer (of Guaran
origin[1]) is an infusion of yerba mate (in Spanish) / erva-mate
(in Portuguese), similar to mate but prepared with cold water
rather than with hot,[2] and in a slightly larger vessel. It is
originally from Paraguay,[3] and is found also in northeastern
Argentina and southern and western Brazil. When hot (mate), the
Guaran people call this infusion ka\'ay,[4] where ka\'a means herb
and y means water. The scientific name of yerba mate is Ilex
paraguariensis.
