Doctor, initially kept in barracks, works in kitchen? (9)

'works in kitchen?' is the definition.
(printed works found in a kitchen)

'doctor initially kept in barracks' is the wordplay.
'doctor' becomes 'cook' (both can mean to rig or manipulate).
'initially' suggests taking the first letters.
'in' means one lot of letters goes inside another.
'barracks' becomes 'boos' (barrack can mean to boo or jeer at).
The initial letter of 'kept' is 'k'.
'k' inserted into 'boos' is 'books'.
'cook'+'books'='COOKBOOKS'