Pie crust ingredient (4)
I believe the answer is:
lard
'pie crust ingredient' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lard that I've seen before include "Hard cooking fat" , "Pig's fat" , "Soft white semisolid fat" , "White cooking fat" , "Pig-fat" .)