Explanatory notes
… generally prepared by extraction with warm water (sometimes acidulated) from the vegetable material (wood, barks, … as other substances such as sugar, mineral salts, organic acids, etc. They are generally brown, yellow or reddish in … are those from oak, chestnut, quebracho, pines, wattle (mimosa), sumach, myrobalans, vallonia, gambier, mangrove or …