What does the cryptic crossword clue "I am unable to help function without beer? (2,3,2)" mean?

The definition is "I am unable to help function without beer?". The wordplay uses a cryptic definition. Cryptic definition The answer is NOCANDO.

I am unable to help function without beer? (2,3,2)

Guardian Cryptic #29451 | 8 Down | 2024-08-02 flower