Alcoholic drink thrown up somewhat predictably (5)
I believe the answer is:
cider
'alcoholic drink' is the definition.
(cider is an alcoholic beverage)
'thrown up somewhat predictably' is the wordplay.
'thrown up' says the letters should be written in reverse (in a down clue, letters go up).
'somewhat' indicates the answer is hidden within the clue.
'redic' is hidden within 'predictably'.
'redic' in reverse letter order is 'CIDER'.
(Other definitions for cider that I've seen before include "Drink made from apple juice" , "Alcoholic drink made from apples" , "Drink made from pears" , "Alcohol from apples" , "Scrumpy" .)