Chullin 99 - Why One-In-Sixty and not the Majority?
The rule of the majority is only applicable to dry pieces that became intermingled. The cooking process, however, leads to mixing of all of the particles, and its law has a special stringency. Then let's derive all other cases from it and negate the law of majority!? - No, we cannot do this, because the law of a cooked foreleg is a novelty, and we don't derive general rules from novel cases.
Still, the apparent discrepancy between the laws of dry and cooked foods leads some to believe that the whole law of one-in-sixty is only a Rabbinical stringency. What about the Torah phrase that seems to indicate otherwise? - It is only a hint that the Sages found for their law.
Art: Cornelis Jacobsz Delff - Still-Life of Kitchen Utensils
