Seconds of spoiled pastry (3)
I believe the answer is:
pie
'pastry' is the definition.
(I know that pie is a type of pastry)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for pie that I've seen before include "something with custard, say" , "A baked dish covered with pastry" , "Confused, mixed type" , "Dish baked in an oven, with pastry or mashed potato topping" , "what to cook for dinner?" .)