Crossword Genius

Is presumably very inexperienced in hotting things up (5,6)

Ross

I believe the answer is:

green pepper

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'hotting things up' is the definition.
I can't tell whether this definition defines the answer.

'is presumably very inexperienced' is the wordplay.
I cannot really see how this works, but
'inexperienced' could be 'green' (similar in meaning) and 'green' is found within the answer.
The remaining letters 'pepper' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

'in' is the link.

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I've seen this clue in The Irish News.
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