In many countries, it was or was an old custom, according to the vintage (Main reading) on the vines remaining (overlooked) grapes to the public, or to allow this gleaning for certain groups of people such as poor or children. In some cases it was customary in some winegrowing areas to intentionally leave some grapes hanging for the gleaning. At the Ahr and Moselle After the end of the main harvest, the Glinnglocke was used as a sign for gleaning, glazing or learning.
In the Bible, Book Leviticus 19.10 is asked to leave the gleaning to the poor and strangers. Regionally, there are many terms: after-hills, after-reading, caustics, Britons, Glens or Gelinnen (Ahr, Mosel), Granen, Grappern, Grappillage (France), Kluppbergeln, Leskornen, Nachähren, Nachwimmeln, Prapsten, Prapstlen, Prpstnen, platform, Retzeln, panicles, Rispeln, Schnaudern, Schnäuken, Schüweln, Spigeln or mirrors (South Tyrol), Spor, Stubble (Pfalz), Suzy, Strumpfeln, Stupfeln, Tarlosnen and Wolferl looking for (Austria). To name the words for the overlooked grapes (Leskorn, stubble, wolf) were often combined with "search", for example, Leskorn search, stubble search or Wolf. See also below Customs in viticulture,