Drank to get warm (7)
I believe the answer is:
toasted
'drank to' is the definition.
('toast' can be a synonym of 'drink to')
'warm' is the wordplay.
I cannot quite understand how this works, but
'warm' could be 'toast' (toast can mean to heat up) and 'toast' is located in the answer.
The remaining letters 'ed' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'get' acts as a link.
Can you help me to learn more?
(Other definitions for toasted that I've seen before include "Saluted" , "(Of bread) browned" , "drank to the happy couple!" , "Heated" , "grilled" .)