What does the cryptic crossword clue "Sup tea Lucy brewed that's good for the cold (10)" mean?

The definition is "Sup". The wordplay uses an anagram. anagram of SUP TEA LUCY = EUCALYPTUS The answer is EUCALYPTUS.

Sup tea Lucy brewed that's good for the cold (10)

Independent Cryptic #11927 | 5 Down | 2024-12-31 flower