How I went round the twist! (5)
I believe the answer is:
twine
'the twist' is the definition.
(I've seen this before)
'how i went' is the wordplay.
'how' indicates anagramming the letters (I've seen this in other clues).
'i'+'went'='iwent'
'iwent' is an anagram of 'TWINE'.
'round' is the link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for twine that I've seen before include "twist" , "Thin cord" , "Coil" , "can get into knots" , "Interweave" .)