Old man's attempt to get something from the baker (6)
I believe the answer is:
pastry
'something from the baker' is the definition.
'old man's attempt to' is the wordplay.
'old man's' becomes 'pa's' (both can mean someone's father).
'attempt to' becomes 'try' (I've seen this in other clues).
'pas'+'try'='PASTRY'
'get' acts as a link.
(Other definitions for pastry that I've seen before include "Cake - tart" , "Cooked dough" , "Eg, Danish" , "Sweet baked dough" , "What makes crust" .)