Two hands required for tropical fruit (6)

I believe the answer is:

pawpaw

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'tropical fruit' is the definition.
'pawpaw' can be an answer for 'fruit' (pawpaw is a kind of fruit). I'm not certain of the 'tropical' bit.

'two hands' is the wordplay.
'two hands' means two substitutions for 'hand'.
'hand' becomes 'paw' (synonyms).
'hand' becomes 'paw' (synonyms).
'paw'+'paw'='PAWPAW'

'required for' acts as a link.

Can you help me to learn more?

(Other definitions for pawpaw that I've seen before include "foul once" , "Custard apple tree" , "Fruit" , "Papaya" .)

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