Sent back wine and one cold drink (5)
I believe the answer is:
cider
'drink' is the definition.
(alcoholic drink)
'sent back wine and one cold' is the wordplay.
'sent back' says the letters should be written backwards.
'wine' becomes 'red wine' (red is a type of wine).
'and' means one lot of letters go next to another.
'one' becomes 'i' (Roman numeral).
'cold' becomes 'C' (eg on taps).
'red'+'i'+'c'='redic'
'redic' back-to-front is 'CIDER'.
(Other definitions for cider that I've seen before include "Alcoholic drink (to be taken with Rosie?)" , "Beverage from apple juice" , "Alcoholic drink from fermented apple juice" , "Alcoholic drink made from apples" , "Drink made from pears" .)