Said vegan perhaps could eat this (8)

'eat this' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.

'said vegan perhaps' is the wordplay.
I cannot quite see how this works, but
'said' could be 't' (I've seen this in other clues) and 't' is found in the answer.
'perhaps' could be 'eg' (for example) and 'eg' is found within the answer.
This explanation may well be incorrect...

'could' is the link.

Can you help me to learn more?