Quote Originally Posted by Eric C. View Post
I usually easily distinguish between pork and chicken, if it's real pork and chicken of course.
I agree with you, but I've heard that "potential confusability" is the reason that strict Orthodox Jews will not eat chicken (or other bird-meat) with dairy -- because, if bought from an unscrupulous vendor, the "chicken croquettes in sour cream" might turn out to be veal, which would break the no-meat-with-dairy rule. Or, it might even be pork -- which, obviously, is трефной no matter how you cook it.

And as Deborski points out, different meats are often chopped/ground and mixed together when making котлеты or тефтели, so then it's harder to tell.