Biscuit that's new behind unopened sponge cakes, filling hole (6,4)
I believe the answer is:
ginger snap
'biscuit' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for ginger snap that I've seen before include "quick bite" , "Spicy biscuit" .)
I've seen this clue in The Guardian.
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