What does the cryptic crossword clue "Experience of getting high yield before – it’s coming back (6,4)" mean?

The wordplay uses a charade (building blocks). RETURN (synonym="yield") + TRIP (synonym="drug experience") = RETURNTRIP The answer is RETURNTRIP.

Experience of getting high yield before – it’s coming back (6,4)

Guardian Cryptic #29472 | 5 Down | 2024-08-27 flower