Wine - mostly very strong on board SS Enterprise and Endeavour? (4-4)
I believe the answer is:
spin-offs
'enterprise and endeavour?' is the definition.
I can't judge whether this defines the answer.
'wine mostly very strong on board ss' is the wordplay.
'wine mostly' becomes 'pino' (I can't justify this - if you can you should give a lot more credence to this answer).
'very strong' becomes 'ff' (musical abbreviation for fortissimo, 'very strong').
'on board' means one lot of letters goes inside another (inserted letters are taken on board).
'pino'+'ff'='pinoff'
'pinoff' placed inside 'ss' is 'SPIN-OFFS'.
Can you help me to learn more?
(Other definitions for spin-offs that I've seen before include "Incidental benefits" , "By-products or incidental results of larger projects" .)