Daughter prepared ricotta for tyrant (8)
I believe the answer is:
dictator
'for tyrant' is the definition.
(I've seen this before)
'daughter prepared ricotta' is the wordplay.
'daughter' becomes 'd' (genealogical abbreviation).
'prepared' is an anagram indicator.
'ricotta' with letters rearranged gives 'ictator'.
'd'+'ictator'='DICTATOR'
(Other definitions for dictator that I've seen before include "Tyrant or oppressor" , "A domineering ruler like Stalin or Mussolini" , "One ordering" , "Authoritarian, tyrant" , "Such as Saddam Hussein" .)