Leaders of agricultural co-ops are introducing berry from Brazil (4)
I believe the answer is:
acai
'berry from brazil' is the definition.
(I've seen this in another clue)
'leaders of agricultural co-ops are introducing' is the wordplay.
'leaders of' suggests taking the first letters.
'ops' becomes 'i' (I am not sure about this - if you are sure you should believe this answer much more).
'are' becomes 'a' (short for 'are', historical unit of measurement).
'introducing' says to put letters next to each other (some letters go before others).
The initial letters of 'agricultural co' is 'ac'.
'i' put after 'a' is 'ai'.
'ac'+'ai'='ACAI'
Can you help me to learn more?
(Other definitions for acai that I've seen before include "fruit which is nutritious" , "South American food product" , "something nutritional to eat" , "South American palm tree" .)