Pound for a flour mixture (6)
I believe the answer is:
batter
This clue might be a double definition.
'pound' is the first definition.
(thesaurus)
'a flour mixture' is the second definition.
'batter' can be an answer for 'mixture' (batter is a kind of mixture). I am not certain of the 'a flour' bit.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for batter that I've seen before include "Hit hard and often, like cooking mixture" , "Hit hard and often (6)" , "Beat heavily" , "Fritter coating" , "Strike hard and often" .)