Overindulgence in a salad of eastern fruits (7)
I believe the answer is:
surfeit
'overindulgence' is the definition.
(I've seen this before)
'salad of eastern fruits' is the wordplay.
'salad of' indicates anagramming the letters (salad can mean a mixture).
'eastern' becomes 'e'.
'e'+'fruits'='efruits'
'efruits' anagrammed gives 'SURFEIT'.
'in a' is the link.
(Other definitions for surfeit that I've seen before include "stuff, once" , "excessive amount" , "it's more than one needs" , "Excess, glut" , "Superabundance" .)