What does the cryptic crossword clue "Seasonal cake you will make a note of, they say (4,3)" mean?

The wordplay uses a homophone (sounds like). Sounds like (they say) ‘You’ll log’ (make a note of) The answer is YULELOG.

Seasonal cake you will make a note of, they say (4,3)

Guardian Cryptic #29124 | 9 Across | 2023-07-17 flower