What does the cryptic crossword clue "Regret pig fat is said to be in this dish (7)" mean?

The definition is "this dish". The wordplay uses a homophone (sounds like). sounds like ‘rue lard’ The answer is ROULADE.

Regret pig fat is said to be in this dish (7)

Times Cryptic #28741 | 3 Down | 2023-10-23 flower