Teas organised before horse's treat after hunt (6,3)
I believe the answer is:
easter egg
'treat after hunt' is the definition.
'easter egg' can be an answer for 'treat' (I have seen 'seasonal treat' mean 'easter egg' so perhaps 'treat' could also mean 'easter egg'). I also know that 'hunt' relates to this answer.
'teas organised before horse's' is the wordplay.
'organised' is an anagram indicator.
'before' becomes 'ere' (poetic term for 'before').
'horse' becomes 'gg' (geegee or GG is a childish term for a horse).
'teas' with letters rearranged gives 'east'.
'east'+'ere'+'gg'='EASTER-EGG'
Can you help me to learn more?
(Other definitions for easter egg that I've seen before include "Seasonal gift" , "festival food" , "Seasonal confection" , "DVD feature?" , "Edible seasonal symbol" .)