What does the cryptic crossword clue "Item that's baked without sugar finally rubbish (3)" mean?

The definition is "rubbish". The wordplay uses a deletion. TAT (deletion) = TAT; definition: "rubbish" The answer is TAT.

Item that's baked without sugar finally rubbish (3)

Times Cryptic #28591 | 2 Down | 2023-05-01 flower