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Kashrus Principles for Vitamins and Medicines (for Pesach and year-round)
Rabbi Yitzchak Twersky November 30, 2016
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OU Kosher Answers Your Summer Kashrut Questions
1. Q: Is it possible to cook on a BBQ that was previously used for non-kosher food such as BBQ’s at parks and campsites? Also, can an outdoor gas or charcoal grill be kashered? A: Since food is roasted directly on the grill, the grate must be heated until it glows (libun gomur) to be […]
Waiting After Eating Hard Cheese: Some Hard Facts
We are familiar with the rule of refraining from consuming meat after eating certain types of cheese. In Yoreh Deah 89:2, the Remo writes, “And there are those who are strict and do not consume meat after eating cheese (source: Mordechai and Beis Yosef in the name of Maharam; v. Tur Yoreh Deah 89), and […]
Chametz Sheavar Alav haPesach: The Supermarket Controversy
An exciting aspect of Torah study is the application of the age-old principles of halachah to the modern world in which we live. Thus, as an example, there is obviously no Talmudic discussion about the propriety of walking past a motion detector on Shabbat, yet contemporary posekim (halachic decisors) have analyzed this issue and found […]
Yoshon
The source for the laws pertaining to Yoshon (old crops) are found in Vayikra (23:9-14). These laws are applicable to the Chamishas HaMinim of barley, oats, rye, spelt and wheat. These grains are Yoshon if they took root prior to Pesach. If the grains did not take root prior to Pesach then they are chadash […]
Milchigs and Fleishigs in the Oven
It is common to be faced with questions regarding using an oven for both milchigs and fleishigs. Can I kasher the oven, or should I wait 24 hours? What about just covering the food? Shulchan Aruch (O.C. 509:5) says that one may kasher a griddle from milchig to fleishig with libun kal, even if it […]
What could be wrong with… ? – Part I
When I was a child, shopping for a kosher candy bar was a simple matter. In those days, a candy bar was only a nickel. We would carefully review the ingredients printed on the back label. If there was no gelatin in the candy, we wisely concluded that the product was unquestionably kosher. No matter […]
OU Policy on Jewish Owned Bakeries
Presentation was given on May 13th 2015.