Drink left, yours truly is taking a bow? (10)

I believe the answer is:

limoncello

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'drink' is the definition.
(type of liqueur)

'left yours truly is taking a bow?' is the wordplay.
'left' becomes 'l' (common abbreviation).
'yours truly is' becomes 'I'm' (contraction of 'I am').
'taking' becomes 'on' (eg one taking drugs is 'on' drugs).
'a bow?' becomes 'cello' (I can't explain this - if you can you should give a lot more credence to this answer).
'l'+'im'+'on'+'cello'='LIMONCELLO'

Can you help me to learn more?

I've seen this clue in The Telegraph.

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