<div dir="ltr"><div>R' Teitz wrote:<br>"As I have always understood it, there is no doubt on the part of any posek<br>
that chaleiv akum is an absolute issur, not a chumra, and not one that<br>
is subject to being overridden because of circumstance short of pikuach<br>
nefesh. The sole matter in dispute is what constitutes chaleiv akum."<br><br></div>There is the opinion of the Pri Chadash and others (albeit a minority opinion) that when there is no suspicion of non-kosher ingredients, milk (chalav akum) is permitted. R' Gil Student writes (<a href="https://www.torahmusings.com/wp-content/uploads/2006/06/halav-yisrael.html">https://www.torahmusings.com/wp-content/uploads/2006/06/halav-yisrael.html</a>):<br>"It is my contention that the dominant custom in America has been, and continues to be, to rely on this strong minority opinion and consume non-Halav Yisrael when there is no question of non-kosher mixtures. "<br></div>