Drink drink containing feather (8)

I believe the answer is:

tequilla

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'drink' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'drink containing feather' is the wordplay.
'drink' becomes 'tea' (tea is a kind of drink).
'containing' indicates putting letters inside.
'feather' becomes 'quill' (quill feather is a kind of feather).
'tea' placed around 'quill' is 'TEQUILLA'.

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I've seen this clue in The Guardian.

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