French ones are usually hot (and sticky?) (5)
I believe the answer is:
fries
'french ones' is the definition.
Although both the answer and definition are plural nouns, I can't see how they can define each other.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for fries that I've seen before include "Cooks in fat" , "Cooks; chips (Amer.)" , "food for grazing?" .)