Power Electro developed drinking a filter coffee (9)
I believe the answer is:
percolate
'filter coffee' is the definition.
'percolate' can be an answer for 'filter' (percolating is a kind of filtering). I am not certain of the 'coffee' bit.
'power electro developed drinking a' is the wordplay.
'power' becomes 'p' (symbol in physics).
'developed' indicates an anagram.
'drinking' means one lot of letters goes inside another (inserted letters are consumed or drunk).
'p'+'electro'='pelectro'
'pelectro' is an anagram of 'percolte'.
'percolte' placed around 'a' is 'PERCOLATE'.
Can you help me to learn more?
(Other definitions for percolate that I've seen before include "Filter - to replace (anag)" , "Sift gradually through clear poet" , "Penetrate gradually" , "Pass through fine openings, like coffee say" , "Strain" .)