Gives camels drink made from cactus (6)

I believe the answer is:

mescal

I'm a little stuck... Click here to teach me more about this clue!

'cactus' is the definition.
(I know that mescal is a type of cactus)

'gives camels drink made' is the wordplay.
'camels' can be anagrammed to 'MESCAL'.
Though, I'm not clear how the anagram is indicated.

'from' is the link.

Can you help me to learn more?

(Other definitions for mescal that I've seen before include "Colourless Mexican spirit made from plant sap" , "Intoxicant from agave" , "Drink distilled from agave" .)

I've seen this clue in The Irish Times.

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