Routine for Jewish comedian, dull person sounding drunk? (6)

I believe the answer is:

shtick

'routine for jewish comedian' is the definition.
(Yiddish term for a comic routine)

I cannot understand how the remainder of the clue works.

(Other definitions for shtick that I've seen before include "Comedian's routine - kitsch (anag)" , "funny routine" , "Performer's routine" , "comedy routine" , "comic's routine" .)

I've seen this clue in The Guardian.

Want a hint initially instead of a full solution? Install my app