Reply To: What You Can Eat in a Non-Kosher Dairy Kitchen

According to Rav Feinstein’s heter CY is not a chumra, it is plain halacha, however the nature of the US milk which is for sale in ordinary USA supermarkets gives it a din of CY; thus according to Rabbi Feinstein it is proper, but it is not obligatory and not required, to buy CY which actually has been under Jewish supervision, given that he paskened the regular supermarket milk in USA satisfies the CY requirements and is thus permissible. I am not sure how many times this needs to be repeated.