Subway staples ___come? (5,3,6)
I believe the answer is:
bread and butter
'subway' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for bread and butter that I've seen before include "sandwiches?" , "Food" , "Subsistence" , "earned?" , "A crust" .)