Eating Meat From An Animal That Didn't Have a Kosher Diet

This episode of Ten Minute Halacha explores a nuanced and often overlooked halachic question: whether an animal that consumed non-kosher food throughout its life remains kosher for consumption. Drawing from three key Gemaras—on the tumah status of digested objects, the prohibition of eating animals fattened with avodah zara, and the ineligibility of animals that nursed from non-kosher sources—the podcast examines whether digestion nullifies the forbidden status of ingested substances. The discussion centers on a critical distinction: while digestion may eliminate tumah (impurity), it may not remove the status of isur (prohibition), especially when the food was itself forbidden. The episode delves into the debate between the Shach, who holds that digestion eliminates even the status of forbidden food, and the Prima Gondim, who argues that if the diet was exclusively non-kosher meat, the animal remains forbidden regardless of digestion. The debate is further complicated by cases involving veal fed on basar b'chalav and birds fed on trefa spleens, with authorities like Rav Moshe Feinstein and the Meresham offering differing views on the extent of 'shinoi' (transformation) required for kashrut. The episode concludes by emphasizing that this seemingly abstract sugya has real-world implications for modern kosher certification, particularly in the meat and poultry industries.