Two classic foundations of the halachos of kashrus are Hilchos Basar B’chalav and Hilchos Ta’aruvos. This volume explores areas of those halachos which are directly relevant to the modern system of hashgachah and the contemporary home. In particular, the focus will be on those areas that relate to situations where issur might be batel into kosher food (bitul), and the details of how and when ta’am transfers from one item to the next (b’lios).