Broadcast porn deal matters for pair that grind (6,3,6)

I believe the answer is:

pestle and mortar

'pair that grind' is the definition.
(a pestle and mortar grind ingredients)

'broadcast porn deal matters' is the wordplay.
'broadcast' indicates anagramming the letters (letters scattered or cast around).
'porn'+'deal'+'matters'='porndealmatters'
'porndealmatters' with letters rearranged gives 'PESTLE AND MORTAR'.

'for' is the link.

I've seen this clue in The Guardian.

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