Article: WHAT IS CASTILE SOAP?
WHAT IS CASTILE SOAP?
Why is it called Castile? Well there was a kingdom called Castilla, we now know it as Spain. And in Castilla there was an abundance of olive groves that had arrived with the Romans a few centuries earlier. And obviously a very smart soap maker decided to swap out the animal fat that was traditionally used to make soap and used olive oil instead and it quickly caught on with the wealthy and royalty across Europe. Being a more expensive bar they were the only ones that could afford to use it! It was so loved that King Louie XIIII decided that the soap makers in Marseilles would only use olive oil in their formulas from now on.
I like to call it the "Original Luxury Soap!"