From: Rabbi Moshe Sofer
To: Unknown recipient
The Chasam Sofer responds to twelve analytical questions across multiple Yoreh Deah topics. Key rulings include: the Ran's principle that an unsalted forbidden item touching a salted permitted item is treated as if both are salted is defensible because the case involves proximity without direct contact, bypassing the ila'ah/tata'ah question; the text of Siman 70 Se'if 6 requires emendation per the Be'er HaGolah; according to Rabbeinu Tam, the concept of lev d'shi'a is not a genuine legal principle; and the Beis Yosef's reading of the Rambam regarding kafila applies specifically to basar bechalav where milk is inherently prohibited.
Source: Shu"t Chasam Sofer YD §71