Is it permissible permissible to eat from non-Mulims? this articl is going to answer to this question.
1 Question: Is it permissible permissible to eat from non Ahlul Kitãb people?
Answer: A Muslim is allowed to eat the food prepared by a non-Muslim who is not from Ahlul Kitãb [for example, a Hindu or a Buddhist], provided that he does not know or is not sure that the non-Muslim touched the food with wetness; and provided that he does not know or is not sure that the food consists of what is forbidden to him like intoxicating drinks. As for meat, fat and their extracts, there are specific rules that will come later on.
2 Question: Is it permissible to eat foods prepared by Christians and Jews?
Answer: Since the followers of the past revealed religions (that is, the Jews, the Christians and the Zoroastrians) are ritually pure, many of the problems concerning the status and permissibility of the food are resolved when we live in their midst. It becomes permissible for us as Muslims to eat from their food no matter whether they touched it with their wet hands or not as long as we do not know or are not sure that it consists of what is forbidden to us, like intoxicating drinks. As for meat, fat and their extracts, there are specific rules that will be discussed later on.[1]
Notes:
[1] Question & Answer » Polytheism: http://www.sistani.org/english/qa/01295/