Q. If one has pas palter (baked by a Gentile) that will spoil if left until motzoi Yom Kippur (even if frozen), and one does not eat it during the Aseres Yemei Teshuva, can one give it to one that does eat pas pelter in those days?
Likewise, if one has chicken leftover from Shabbos Chazon and it will spoil if left for after the Nine Days. can he give it to someone who eats chicken meat on the Nine Days?
A. On question 2022 in regard to permitting someone who is careful to eat only products that contain Chalav Yisrael, to serve to his guest that eat non Chalav-Yisrael pastries and chocolates that have proper Kasher supervision but are not Chalav Yisrael, we wrote; Horav Shlomo Miller's Shlit'a opinion is that as long as the guest are aware that the food offered to them is not Cholov Yisroel and they usually consume it, there is no Lifnei Iver or Mesayea prohibition involved.
The Rov maintains, that the same will apply to pas pelter for someone who always eats it, or chicken meat for someone who is permitted to consume it during the Nine Days because of health reasons.
Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit'a