One drink at a time (3)
I believe the answer is:
tea
'one drink' is the definition.
(tea is a drink)
'at a time' is the wordplay.
'at' says to put letters next to each other.
'time' becomes 'te' (I can't explain this - if you can you should believe this answer much more).
'a' after 'te' is 'TEA'.
Can you help me to learn more?
(Other definitions for tea that I've seen before include "Brew" , "Oolong, for example" , "Sort of garden, chest or service" , "Popular beverage brewed at home" , "Plantation product" .)