Sweet stuff that could makes army supple (5,5)

I believe the answer is:

maple syrup

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'sweet stuff that' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps there's a link between them I don't understand?

'makes army supple' is the wordplay.
'makes' is an anagram indicator.
'army'+'supple'='armysupple'
'armysupple' is an anagram of 'MAPLE SYRUP'.

'could' acts as a link.

Can you help me to learn more?

(Another definition for maple syrup that I've seen is " Sticky (Canadian?) foodstuff".)

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