What does the cryptic crossword clue "Wine knocked back in Aegean is terrible (7)" mean?

The definition is "Wine". The wordplay uses hidden reversed. Hidden reversed in "wine knocked back in aegeAN IS TERrible" The answer is RETSINA.

Wine knocked back in Aegean is terrible (7)

Independent Cryptic #11957 | 10 Across | 2025-02-04 flower