Try to get alcoholic drink put in dessert from the east (4,2)
I believe the answer is:
drum up
'try to get' is the definition.
(eg to drum up support is to seek support)
'alcoholic drink put in dessert from the east' is the wordplay.
'alcoholic drink' becomes 'rum' (alcoholic spirit).
'put in' means one lot of letters goes inside another.
'dessert' becomes 'pud' (pud is a kind of dessert).
'from the east' says the letters should be written in reverse.
'pud' reversed gives 'dup'.
'rum' put within 'dup' is 'DRUM UP'.
(Other definitions for drum up that I've seen before include "Attempt to obtain (support)" , "Obtain through vigorous effort - and percussion?" , "Attempt to get support by canvassing" , "To attract" , "Bring about (something) by constant and persistent effort" .)