Some beef stored in empty farm building (5)
I believe the answer is:
baron
'some beef' is the definition.
(baron is a joint of beef)
'stored in empty farm building' is the wordplay.
I cannot really understand how this works, but
'empty' could be 'o' and 'o' is present in the answer.
'building' could be 'barn' (barn is a kind of building) and 'barn' is present in the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for baron that I've seen before include "Member of the nobility" , "Nobleman providing a portion of beef" , "Titled man for a portion of beef" , "Born a (anagram) - powerful man of business" , "Powerful financier" .)