Surprise drink in the morning (3-6)
I believe the answer is:
eye-opener
This clue might be a double definition.
'surprise' is the first definition.
(eye opener is a kind of surprise)
'drink in the morning' is the second definition.
'eye opener' can be an answer for 'drink' (eye opener is a kind of drink). I'm not sure about the 'in the morning' bit.
Can you help me to learn more?
(Other definitions for eye-opener that I've seen before include "A startling enlightenment!" , "Surprise revelation" , "Surprising fact - like wake up call" , "This surprises greatly - makes you look" , "Circumstances that brings surprise and enlightenment" .)