UNCLEAN GENTILES
The Mishna says, "The dwelling places of Gentiles are ritually unclean (Ohalot 18:7). David Stern summarizes other passages in the Mishna, "…Jews may not remain alone with Gentiles, leave cattle at their inns, assist them in childbirth, suckle their children, do business with them when they are traveling to idolatrous festivals, drink their milk or vinegar or wine…or eat their bread or oil or pickled vegetables or…their cooked food."
[Source: Jewish New Testament Commentary by David Stern, p. 258.]