Cheese might be said to produce this (10)
I believe the answer is:
photograph
'cheese' is the definition.
The answer and definition can be both to do with fundamental existence as well as being verbs in their base form.
Perhaps there's a link between them I don't understand?
'said to produce this' is the wordplay.
I cannot really understand how this works, but
'to' is present in the answer.
This explanation may well be incorrect...
'might be' is the link.
Can you help me to learn more?
(Other definitions for photograph that I've seen before include "Snapshot" , "Picture" .)