Brandy-based cocktail, and a hint to locating the second part of four three-part puzzle answers (7)

I believe the answer is:

sidecar

(Other definitions for sidecar that I've seen before include "Attachment to motor cycle" , "Tipple" , "Part of combination" , "Passenger carrier attached to a motorcycle" , "Vehicle" .)

I've seen this clue in the LA Times.

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