Crossword Genius

Crazy about energy drink (4)

Ross

I believe the answer is:

mead

'drink' is the definition.
(mead is a kind of drink)

'crazy about energy' is the wordplay.
'crazy' becomes 'mad' (synonyms).
'about' means one lot of letters goes inside another.
'energy' becomes 'e' (physics symbol as in E=mc2).
'mad' enclosing 'e' is 'MEAD'.

(Other definitions for mead that I've seen before include "Cooked joint" , "Cornish drink" , "Drink made of fermented honey and water" , "Alcoholic drink of fermented honey and water of old" , "something to drink" .)

I've seen this clue in the Sydney Morning Herald.
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