
• (n.) A mixture composed of unfermented grape juice, brandy, sugar, etc., for adulteration of wines.
Found on
http://thinkexist.com/dictionary/meaning/geropigia/
Ger`o·pig'i·a noun [ Portuguese
geropiga .] A mixture composed of unfermented grape juice, brandy, sugar, etc., for adulteration of wines. [ Written also
jerupigia .]
Found on
http://www.encyclo.co.uk/webster/G/23

Geropigia was a mixture composed of unfermented grape-juice, with sufficient brandy and sugar to prevent it from fermentation, and colouring matter from rhatany root or log-wood, formerly imported from Portugal, to give spurious strength and colour to port wines.
Found on
http://www.probertencyclopaedia.com/browse/QG.HTM
No exact match found.