Latke ingredient (6)
I believe the answer is:
potato
'latke ingredient' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for potato that I've seen before include "hard to handle when hot" , "A plant; hole in sock (colloq.)" , "Maris Piper?" , "Inert person" , "Vegetable with eyes" .)