From: Rabbi Moshe Sofer
To: Unknown recipient
The Chasam Sofer investigates the Tzlach's claim that eggs have shrunk to half their original size, which would require doubling all egg-based halachic measurements. He confirms the empirical discrepancy but rejects the shrinkage theory, attributing it to the water displacement method's inherent inflation.
Source: Shu"t Chasam Sofer OC §127