Warned of alcoholic drink, wine containing Tango (7)
I believe the answer is:
alerted
'warned' is the definition.
(alerting is a kind of warning)
'alcoholic drink wine containing tango' is the wordplay.
'alcoholic drink' becomes 'ale' (type of beer).
'wine' becomes 'red' (red is a type of wine).
'containing' means one lot of letters goes inside another.
'tango' becomes 'T' (phonetic alphabet: alpha, bravo, charlie etc.).
'red' enclosing 't' is 'rted'.
'ale'+'rted'='ALERTED'
'of' is the link.
(Other definitions for alerted that I've seen before include "Put on guard, raised the alarm" , "Given signal" , "Given warning" , "Put on guard, warned" , "Tipped off" .)