Make the coffee cold instantly! (6-3)
I believe the answer is:
freeze-dry
'make the coffee cold instantly' is the definition.
I can't tell whether this definition defines the answer.
'make the coffee cold' is the wordplay.
'make the coffee' becomes 'freeze' (I can't justify this - if you can you should believe this answer much more).
'cold' becomes 'dry' ('dry' can be a synonym of 'cold').
'freeze'+'dry'='FREEZE-DRY'
Can you help me to learn more?
(Another definition for freeze-dry that I've seen is " Store in a cold vacuum".)