Perfect conditions for a customer's pastry requirement (5-3,5)
I believe the answer is:
apple-pie order
'perfect conditions for a customer's' is the definition.
I can't judge whether this definition defines the answer.
'pastry requirement' is the wordplay.
'pastry' becomes 'apple pie' (apple pie is a kind of pastry).
'requirement' becomes 'order' (I can't justify this - if you can you should believe this answer much more).
'applepie'+'order'='APPLE-PIE ORDER'
Can you help me to learn more?
(Other definitions for apple-pie order that I've seen before include "Perfect condition" , "Perfectly tidy" , "In which everything is neat and tidy" , "Perfect arrangement" , "Exceedingly neat and tidy condition" .)