Is pate smeared with curds when they are thrown? (7,4)

I believe the answer is:

custard pies

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'they are thrown?' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'is pate smeared with curds' is the wordplay.
'smeared with' is an anagram indicator.
'is'+'pate'='ispate'
'ispate' anagrammed with 'curds' gives 'CUSTARD PIES'.

'when' is the link.

Can you help me to learn more?

(Another definition for custard pies that I've seen is " Slapstick comedy missiles".)

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