Crossword Genius

Bread products also found in nice shops we supply (4,10)

Ross

I believe the answer is:

open sandwiches

I'm a little stuck... Click here to teach me more about this clue!

'bread products' is the definition.
Although both the answer and definition are plural nouns, I don't understand how they can define each other.

'also found in nice shops we supply' is the wordplay.
I cannot quite understand how this works, but
'also' could be 'and' (both can mean in addition) and 'and' is found within the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in The Times.
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