Q. If one is at an event or there is food being served in a shul or beis medrash and he is not sure if the food being served is yoshon, and it is not possible to investigate, may he eat it, on the basis that “rov” (most) Jewish bakeries use yoshon flour? (I heard such a heter in the name of an adam gadol, and I wanted to ask Rav Miller’s opinion.)

A. Horav Shlomo Miller’s Shlit’a opinion is that it depends on a number of factors, such as the usual or most common origin of the food served in that shul or beis hamedresh (what kind of people acquire, serve or donate the food), what time of the year it is being served, what kind of grain or wheat was used, etc. Therefore, it is recommendable to consult with a local competent Rabbi, familiar with the details of the institution.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a