Hot under the collar and a bit drunk (7)
I believe the answer is:
steamed
'hot under the collar' is the definition.
(I've seen this in another clue)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for steamed that I've seen before include "Cooked in vapour" , "cooked a certain way" , "Cooked over hot water" , "Cooked over boiling water" , "Proceeded with course" .)