I fill chamber half up: stirring everything, to produce this wine (13)
I believe the answer is:
liebfraumilch
'this wine' is the definition.
(liebfraumilch is a kind of wine)
'i fill chamber half up stirring everything' is the wordplay.
'half' suggests halving the letters.
'stirring everything' is an anagram indicator.
'up' cut in half is 'u'.
'i'+'fill'+'chamber'+'u'='ifillchamberu'
'ifillchamberu' is an anagram of 'LIEBFRAUMILCH'.
'to produce' acts as a link.
(Other definitions for liebfraumilch that I've seen before include "Light white Rhine wine" , "Cheap blended Rhine wine for the export market" , "Cheapish white wine from the Rhine region" , "German white wine" .)