Blend of tea that corroded? (3)
I believe the answer is:
ate
'that corroded?' is the definition.
(I've seen this in another clue)
'blend of tea' is the wordplay.
'blend of' indicates an anagram (I've seen this in other clues).
'tea' with letters rearranged gives 'ATE'.
(Other definitions for ate that I've seen before include "Consumed food" , "upset > Greek goddess" , "Took food" , "mischief-maker" , "Bolted" .)