Statement of facts about wine (6)
I believe the answer is:
report
'statement of facts' is the definition.
(I've seen this before)
'about wine' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'wine' becomes 'port' (port is a kind of wine).
're'+'port'='REPORT'
(Other definitions for report that I've seen before include "result of firing?" , "'Description, account (6)'" , "School student's assessment" , "Formal statement" , "Porter (anag.)" .)