Little brown jug for Guinness, say (6)
I believe the answer is:
brewer
'guinness say' is the definition.
(Guinness is a brand of beer)
'little brown jug' is the wordplay.
'little brown' becomes 'br' (I am not sure about the 'little' bit.).
'jug' becomes 'ewer' (I've seen this before).
'br'+'ewer'='BREWER'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for brewer that I've seen before include "one needing teapot?" , "Tendency to seek perfection" , "Beer-maker" , "One makes beer" , "Maker of beer etc" .)