http://www.medievalcookery.com/notes/currants.shtm
There are three distinct fruits which are modernly called currants. There is the
European black currant, a small black fruit (
Ribes nigrum), the
European red currant (
Ribes rubrum ) which is about the same size but is red in color, and then there is the dried fruit of the
"Black Corinth grape" (Genus Vitis).
Ribes nigrum, the black currant, was described by Gerard as being "of a stinking and somewhat loathing savour."
The Black Corinth grape is a very small member of the grape family, which is about the same size as red and black currants.