Make the tea go round in jug (4)
I believe the answer is:
stir
'jug' is the definition.
(both are slang for prison)
'make the tea go round' is the wordplay.
I cannot quite see how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is located in the answer.
The remaining letters 'sir' 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).
'in' acts as a link.
Can you help me to learn more?
(Other definitions for stir that I've seen before include "Excitement" , "Whisk or mix" , "prompt" , "cooler" , "jail" .)