Pole working to make dairy product (7)
I believe the answer is:
stilton
'dairy product' is the definition.
(I know that Stilton is a type of bleu)
'pole working' is the wordplay.
'pole' becomes 'stilt' (stilts are poles somebody walks on).
'working' becomes 'on' (on can mean working or activated).
'stilt'+'on'='STILTON'
'to make' acts as a link.
(Other definitions for stilton that I've seen before include "Cheese variety" , "19 cheese" , "Type of cheese" , "English cheese, usually veined" , "rich food?" .)