If we've said it once, we'll say it again — eggshells shouldn't end up in the compost. In fact, they could be the secret to making cookware gleam.
Thiaw, D. , Wade, A. , Sall, M. , Diouf, S. and Dieye, G. (2026) Utilization of Eggshells Waste as an Additive to Improve the Mechanical Properties of Clays. Journal of Minerals and Materials ...