Who's got the hot chestnuts? (5,5)

I believe the answer is:

horse thief

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'chestnuts?' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'who's got the hot' is the wordplay.
I cannot really understand how this works, but
an anagram of 'the' is 'eth' which is located in the answer.
'hot' could be 'h' (abbreviation eg on taps) and 'h' is found within the answer.
This may be the basis of the clue (or it may be nonsense).

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I've seen this clue in the Evening Standard.

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