One half of couple picking up food from Chinese restaurant (9)
I believe the answer is:
chopstick
'one half of couple picking up' is the definition.
I can't tell whether this defines the answer.
'food from chinese restaurant' is the wordplay.
'food' becomes 'chop' (chop is a kind of food).
'from' means one lot of letters go next to another.
'chinese restaurant' becomes 'stick' (I can't explain this - if you can you should give a lot more credence to this answer).
'chop'+'stick'='CHOPSTICK'
Can you help me to learn more?
(Other definitions for chopstick that I've seen before include "Oriental eating utensil" , "Eastern eating utensil" , "In the plural, they're oriental cutlery" , "member of consumer association" .)