Greatly enjoy eating silver salad component (6)
I believe the answer is:
lovage
'salad component' is the definition.
(lovage leaves might be used in a salad)
'greatly enjoy eating silver' is the wordplay.
'greatly enjoy' becomes 'love' (to love something is to enjoy it).
'eating' means one lot of letters goes inside another.
'silver' becomes 'Ag' (Ag is the chemical symbol for silver).
'love' enclosing 'ag' is 'LOVAGE'.
(Other definitions for lovage that I've seen before include "Salad plant from a glove?" , "Salad plant from southern Europe" , "liquor" , "Parsley relative - a glove (anag)" , "F" .)