Kosher Professionals
Lo Basi Ella L’orer: Creating Adequate Mirsas
Discussion of sensitive ingredients
Lo Basi Ella L’orer: Pasteurizers – Changing the Water
If a kettle is used to cook a non-kosher product then the hot water or steam that was used to heat the kettle becomes non-kosher as well. Chazal tell us that we must be concerned that some non-kosher taste may pass through the wall of the utensil and leach into the product on the other […]
Lo Basi Ella L’orer: Kashering Belts
It is common in many plants to have a product come out of an oven and go onto a belt. If the product is hot and non-kosher and it falls onto a cold belt, how must we kasher this belt?
Bishul Akum: Tzuras hapas
Baked items made from the five grains usually fall into the category of bread and as such are not subject to the issur of bishul akum. The Beis Meir and the Pri Chadash (Y.D. 112:6) offer the following definition for bread. Any food on which one would recite Hamotzi if eaten bikvias seuda, as outlined […]
Lo Basi Ella L’orer: Waiting 24 Hours To Do Hagalah
Ordinarily, we require waiting 24 hours before doing hagalah on utensils that had absorbed non-kosher. This is because before 24 hours the ta’am that is absorbed inside of a utensil is still nosain ta’am lishvach. The water that one tries to use to kasher the utensil will receive the non-kosher ta’am and it itself will […]
Lo Basi Ella L’orer: Calculating Bitul
We are often confronted with situations in which we must determine if issur is batel in heter. Sometimes this is very easy to figure out. Under normal circumstances if 10 grams of issur is used with 5,000 lbs. of heter it will be batel.1 Other times it might be more complicated and we must take out […]
Styrofoam Cups and Aluminum Foil
Over the past several decades the kosher industry has grown considerably. Food companies recognizing the profitability of the kosher market have pursued kosher certification in an effort to increase marketability and sales of their products. What has been especially remarkable is that the pursuit of kosher certification has not stopped with food. It is not unusual to find nowadays a hechsher on non-food items. Are there really any viable kashrus concerns with something that is inedible? This article will focus on three popular household items, aluminum foil and pans, Styrofoam cups, and paper towels.
Lo Basi Ella L’orer: Relying on a K’feila
If a non-kosher food falls into a pot of kosher food and we are not sure whether it was nosain ta’am, the Gemara (Chulin 98a) says that we can get a non-Jewish k’feila (chef) to taste the food. If the non-Jew can assure us that the non-kosher taste is not detectable, then the food is […]
Tevilas Keilim: Commercial and Private
Tevilas Keilim: Commercial and Private – Rabbi Elimelech Lebowitz – Recorded on August 11, 2006 at OU world Headquarters in NY,NY as part of the Harry H. Beren Ask OU8 Kashruth Internship Program.
Technical Issues in the Production of Cheese and Whey
Technical Issues in the Production of Cheese and Whey – Presented by Rabbi Avrohom Gordimer as part of the ASK OUTREACH program. Recorded at Mesivta Tiferes Yerusholayim on February 12, 2008.