Leaves it's possible to eat (3)
I believe the answer is:
tea
'leaves' is the definition.
(as in tea leaves)
'possible to eat' is the wordplay.
'eat' can be anagrammed to 'TEA'.
But, I am unsure how the anagram is indicated.
'it's' is the link.
Can you help me to learn more?
(Other definitions for tea that I've seen before include "Infused leaves" , "Early evening meal" , "Shrub; drink" , "Sort of garden, chest or service" , "A light meal - eat up" .)