Fruit spirit before bottling (7)
I believe the answer is:
tangelo
'fruit' is the definition.
(I know that tangelo is a fruit)
'spirit before bottling' is the wordplay.
'spirit' becomes 'angel'.
'before' becomes 'to' (I am not sure about this - if you are sure you should believe this answer much more).
'bottling' means one lot of letters goes inside another (bottling is a kind of containing).
'angel' going into 'to' is 'TANGELO'.
Can you help me to learn more?
(Other definitions for tangelo that I've seen before include "Citrus fruit hybrid" , "Mixed fruit" , "one cross, sour" , "sharp cross" , "fruitful merger?" .)