"Is there meat in your potato salad?"
Translation:Je ve vašem bramborovém salátu maso?
Sorry to say, but that sounds really awful to my ears :// Stick with the answer shown above. (Obviously, ve tvém is perfectly ok)
This is a good word order if it was some specific "the meat" and "to maso" and you were asking if it is in the salad or somewhere else. But to ask whether the salad contains meat it is just strange.