Alarm waiter, ordering basic ingredients (3,8)

I believe the answer is:

raw material

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'alarm waiter ordering basic ingredients' is the definition.
I can't judge whether this definition defines the answer.

'alarm waiter ordering' is the wordplay.
'ordering' indicates anagramming the letters.
'alarm'+'waiter'='alarmwaiter'
'alarmwaiter' with letters rearranged gives 'RAW MATERIAL'.

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(Other definitions for raw material that I've seen before include "Unprocessed resource" , "something uncooked" .)

I've seen this clue in The Daily Express.

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