There was a pot of soup that a fly fell into it. The fly was not located and therefore the whole soup became prohibited. Even though the soup might have 60 parts against the fly, still since the fly ...
Nitei Gavriel Shavuos 29:14 says that one may eat cheese that has worms in it, and there is no prohibition of Sheretz on it. Is this accurate? Does everyone agree with this?
The Ramban derives that people are kosher from the gemara in Kerisos (21a i think) That since the rabbis said that human milk is kosher using concept that anything that comes from kosher animal is ...