The most important thing seems to be sealing the unused portion in an airtight container and keeping in a cool, dark place. Some people have used the refrigerator or freezer with no bad effects as long as the soap is packaged well. Lots of methods for preservation are described in the forum. Here's one good thread:
I have not personally needed the kilo brick. I just buy another tub when I run low. No issues with spoilage yet.
Do I put my Cella on Ice?
I read to my horror today that the tallow in Cella Sapone turns rancid with time. So what's the thing to do? Freeze it? I have so much soap it might be years before I consume very much of the kilo brick. Help a brother out. Thanks.
www.badgerandblade.com
I have not personally needed the kilo brick. I just buy another tub when I run low. No issues with spoilage yet.