Eruv Chatzeiros May Not Be Made with Water, Salt, and Oil

Description

Rabbi Akiva Eiger strongly rejects a ruling permitting eruv chatzeiros with water, salt, and oil instead of bread, demonstrating that Rashi's seemingly permissive comment was not a practical ruling but a reflection of the Gemara's initial assumption, which was ultimately rejected. He holds that all Rishonim and Acharonim require bread for eruv chatzeiros, and advises that each courtyard make its own eruv with bread while also placing a communal eruv in the synagogue as a backup.