Biscuit ingredient as mixed by Spooner that's seen on collar (6,3)
I believe the answer is:
ginger nut
'biscuit' is the definition.
(type of biscuit)
'ingredient as mixed by spooner that's seen on collar' is the wordplay.
I cannot really understand how this works, but
'ingredient' could be 'ginger' (ginger is a kind of ingredient) and 'ginger' is found within the answer.
The remaining letters 'nut' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for ginger nut that I've seen before include "redhead?" , "Variety of biscuit" , "Spicy biscuit" , "Type of biscuit" , "Kind of biscuit" .)