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I asked my LOR and he showed me the mishnah in trumos (Perek 5 Mishnah 8) which is the original source of the machlokes. If 1 piece of chulin falls into a 100 pieces of chulin, it is batel. If a second piece of trumah falls in, then there is a machlokes as to whether it was now considered 2 in a 100 (1 in 50) and asur or 1 in 101 and batel again. This ...


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Assuming I understand your question correctly, batel b'shishim applies to both rabbinically and torah prohibited foods. It's basically the ratio at which chazal felt a tiny quantity of food became relevant. However keep in mind it only applies to food when you can't separate the two foods. If a piece of non-kosher cheese fell into a bowl full of pieces of ...


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The earliest source is the gemarah. Gemarah Shabbat 77a says that the standard ratio for dilution of wine with water (diluting wine was common in those times) was 3:1. The gemarah in Avoda Zara 73b says that if you have two cups of wine, one of which is forbidden and one isn't, and mix the two together, the resulting mixture is permitted. The Raavad and ...


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AFAIK that kitniyot is nullified in a majority is universally agreed upon. The Rama (OC 453:1) writes that we do not forbid a mixture into which kitniyot fell, and the Mishna Berura there notes that obviously this means that there must be at least a majority of non-kitniyot and that if any piece of kitniyot is visible (nikkar) one must pick it out.


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Cholov Akum is its own decree. In other words, it would have been completely kosher if not for the extra decree against it (like Pas Akum or Bishul Akum, which are intrinsically kosher yet there is a decree against consuming it). The question is Is Chalav Akum a decree "with a reason" which can be nullified if the reason doesn't exist (so that countries ...


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Some thoughts to consider. One is not allowed to mix up foods on purpose in order that they should become batel (nullified). For instance, if I have two pieces of Kosher meat and one piece of not-Kosher meat, I can't mix them up so that bittul would apply and I would have three pieces of edible meat. If I do this the law of bittul doesn't apply and all ...


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R' Blumenkranz in his Pesach Guide discusses homeopathic solutions, and is mattir based on them statistically not containing a single molecule. So according to him, a single molecule constitutes mashehu. E.g. mashehu chametz on pesach of table vinegar is 9.58×10-44 oz, considering only the the acetic acid part.



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