Big cigar upset Alan Patel (9)
I believe the answer is:
panatella
'big cigar' is the definition.
'panatella' can be an answer for 'cigar' (type of cigar). I'm not certain of the 'big' bit.
'upset alan patel' is the wordplay.
'upset' indicates an anagram.
'alan'+'patel'='alanpatel'
'alanpatel' with letters rearranged gives 'PANATELLA'.
Can you help me to learn more?
(Other definitions for panatella that I've seen before include "One smoker lights" , "Slender cigar" , "Long, thin cigar" , "Type of cigar" , "that's smoked" .)