Hot drink, case of cocoa fed to a sheep (9)
I believe the answer is:
americano
'hot drink' is the definition.
(type of hot drink)
'case of cocoa fed to a sheep' is the wordplay.
'case of' means to remove the middle letters (outsides of).
'fed to' is an insertion indicator.
'sheep' becomes 'merino' (breed of sheep).
'cocoa' with its middle removed is 'ca'.
'a'+'merino'='amerino'
'ca' inserted into 'amerino' is 'AMERICANO'.
(Other definitions for americano that I've seen before include "Espresso diluted with hot water" , "drink" , "Style of coffee" .)