Preserving a Caul
Cauls have been preserved in several ways through the millennia: from keeping them in jars or containers of water, to folding them up and keeping them in envelopes.
A recommended way to preserve a Caul is to let it dry out after the birth without folding it, and then laying it out on non-acidic cardboard or other non-reactive material. Cling-wrap or other non-reactive material is often used to cover both the Caul and the backing material. Once this is done the Caul should be preserved in a dry safe place, away from dust, heat and moisture.
A Caul will usually dry out and become more fragile as time passes, so it is important to take as much care as possible in preserving it at the start.