If asking a shop keeper if they have any food (baguette, wrap etc.) containing fish, what is the proper way to ask?
I usually use one of the following:
Haben Sie etwas mit Fisch?
Haben Sie etwas aus Fisch?
I am not sure if either of these are correct and sometimes the shopkeepers have a hard time understanding me.
From the answers in this question and some examples, I am more inclined towards aus but would like to know the proper preposition and would appreciate an explanation.