Beastly drink got stirred in trough (6)

I believe the answer is:

rotgut

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'beastly drink' is the definition.
'rotgut' can be an answer for 'drink' (rotgut is a kind of drink). I'm not sure about the 'beastly' bit.

'got stirred in trough' is the wordplay.
'stirred' indicates an anagram.
'in' indicates putting letters inside.
'trough' becomes 'rut' (I can't justify this - if you can you should give a lot more credence to this answer).
'got' is an anagram of 'otg'.
'otg' going inside 'rut' is 'ROTGUT'.

Can you help me to learn more?

(Other definitions for rotgut that I've seen before include "plonk" , "inferior liquor" , "Cheap, nasty alcohol" , "Cheap booze" , "poor wine?" .)

I've seen this clue in The Times.

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