Disaster as endless pot and ecstasy is introduced by jazz fan (11)
I believe the answer is:
catastrophe
'disaster' is the definition.
(synonyms)
'endless pot and ecstasy is introduced by jazz fan' is the wordplay.
I cannot really understand how this works, but
'ecstasy' could be 'e' (informal term for the drug) and 'e' is located in the answer.
'by' could be 'at' and 'at' is present in the answer.
'pot' could be 'cast' (I've seen this before) and 'cast' is found within the remaining letters.
This may be the basis of the clue (or it may be nonsense).
'as' acts as a link.
Can you help me to learn more?
(Other definitions for catastrophe that I've seen before include "Terrible event" , "disastrous event?" , "Event causing much damage" , "Denouement" , "Calamity" .)