Very keen on the spicy (3)
I believe the answer is:
hot
This could be a double definition.
'very keen' is the first definition.
'hot' can be an answer for 'keen' (I've seen this in other clues). I'm not certain of the 'very' bit.
'the spicy' is the second definition.
(I've seen this in another clue)
'on' acts as a link.
Can you help me to learn more?
(Other definitions for hot that I've seen before include "Under the collar, it means anger" , "recently stolen" , "Sultry in psychotic way" , "SECOND PART OF 11" , "Stolen - sought after" .)