Re: Eating stuff cooked by non-muslims.
arrey yaar its not like that. when u visit any resturant do you ask whther the cook is muslim or non-muslim? does it really matter who is cooking?
even at reatsurants ppl do ask for what is the base of some sauce or soup or what type of shortening they use. I think the issue is more of if it is a non muslim cook they may not follow your dietary guidelines because they are unfamiliar with them.
its like if you have food allergies, u ask if there is shellfish in something or peanuts etc. if someone who does not know, or does not know what to look for cooks
I have had very sincerely prepared meatloaf which had pork in it, biscuits and gravy where the gravy was pork based, beans with a pork base, vegetable soup with a beef base, and chicken curry with a fish base.
and I did not know in any of these cases that there was something else in there. Now my issue was just with pork but you get the idea.
I think confirming that the food meets your needs is not a wrong thing to do, but blanker statements that you can eat food prepared by non muslims is just over the top and incorrect.