Daf ha-kashrus


• Bitul of Milk • Bishul on Shabbos Part IV: Sweet ‘N Low & Equal • Night of Jewish Unity and Record-Breaking Challah • Coca-Cola Freestyle Machines, Kashrus Alert, Flour Infestation, ASK OU & More….

AV-ELUL 5775/AUGUST 2015

• Dairy Bread • Bishul on Shabbos Part III: Splenda • Remembering Reb Yoni Kantor • Ask OU’s First Kosher Meat Tour

Dairy Bread – Lo Basi Ela L’Orer

The Gemara (Pesachim 30a-b) writes that one may not knead dough with milk (or meat), out of concern that this may lead to eating milk and meat together, and if one did, the bread becomes forbidden. This halacha is brought in Shulchan Aruch (Y.D. 97:1). However, if only a small amount of milk was added, […]


In a previous Daf we explained that instant coffee, even flavored Nescafe, can be prepared in a kli sheini that is yad soledes bo. This is because when a food has been fully cooked before Shabbos – which is the case with flavored Nescafe – it is permissible to cook it in on Shabbos, provided […]

Yomim Noraim 5776 – consumer edition

• What could be wrong with…? • Cholov Yisroel: Unraveling the Mysteries -Part II

Cholov Yisroel: Unraveling The Mysteries – Part II

After all milking is completed and the milk in the farm’s holding tank or silo is ready to be shipped to a dairy processing plant, which will homogenize, pasteurize and bottle the milk, or will use the milk to manufacture cholov yisroel cheese, butter, ice cream or the like, the milk is loaded into a […]

TAMMUZ 5775/JULY 2015

• Inspecting Dried Fruits for Insects • Gezeira Shema Chayis • Jewish-Owned Bakeries • Kashrus Alert

Inspecting Dried Fruits for Insects

A possible kashrus issue that arises with dried fruits is the presence of insects. The Rambam [1] writes that before consumption, there is an obligation to check fruits or vegetables that might harbor insects while attached to the ground. Nevertheless, once twelve months have elapsed post-harvest, the fruit or vegetable may be eaten without checking beforehand. […]

Gezeira Shema Chayis – Lo Basi Ela L’Orer

The Gemara (Pesachim 30b) says that a clay oven, which is regularly filled with coals, may be kashered for Pesach by filling it with coals. We are not concerned that it might crack, since this is its normal use. However, Chazal made a gezeira that clay pots and dishes may not be kashered in this manner. […]

Jewish Owned Bakeries – Lo Basi Ela L’Orer

The Tur (Y.D. 112) writes that dough which is owned by a Yisroel but is baked by a non-Jew becomes forbidden like bishul akum. This would mean that it would not have any of the leniencies of pas akum. For example, even if pas Yisroel is unavailable, this bread would still be forbidden. Shulchan Aruch […]