Having an alcoholic ingredient, it can help keep you going (6)
I believe the answer is:
engine
'keep you going' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I don't see?
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for engine that I've seen before include "turn of mind once" , "Motor" , "Mechanical device as source of power, a driver" , "Machine supplying power" , "Power unit" .)