Flamboyant style of pie mostly seen around South Africa (6)

'flamboyant style' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'pie mostly seen around south africa' is the wordplay.
'mostly' means to remove the last letter (most but not all of the word).
'seen' becomes 'zz' (I can't explain this - if you can you should give a lot more credence to this answer).
'around' indicates putting letters inside.
'south africa' becomes 'za' (abbreviation for Zuid-Afrika).
'pie' with its last letter taken away is 'pi'.
'pi'+'zz'='pizz'
'pizz' going around 'za' is 'PIZAZZ'.

'of' is the link.

Can you help me to learn more?