Ginger, perhaps reduced and added to a jelly (5)
I believe the answer is:
aspic
'jelly' is the definition.
(I know that aspic is a type of jelly)
'ginger perhaps reduced and added' is the wordplay.
'ginger perhaps' becomes 'spice' (gingering is a kind of spicing).
'reduced' means to remove the last letter.
'and' is a charade indicator (letters next to each other).
'added' becomes 'a' (this could be a standard abbreviation which I don't know about).
'spice' with its final letter taken away is 'spic'.
'spic' put after 'a' is 'ASPIC'.
'to a' is the link.
Can you help me to learn more?
(Other definitions for aspic that I've seen before include "Preservative jelly" , "Jelly made with fish or meat stock" , "Glaze" , "Gelatin product" , "Edible jelly" .)