What does the cryptic crossword clue "I came up to brew tea and dry up (8)" mean?

The definition is "dry up". The wordplay uses an anagram. anagram of I + CAME + TEA = EMACIATE; definition: "dry up" The answer is EMACIATE.

I came up to brew tea and dry up (8)

Guardian Cryptic #25233 | 17 Down | 2011-01-31 flower