the abundance of olive trees in the Mediterranean area led to the development of soaps based on olive oil and lye from the ashes of the barilla, a common plant. The soap shown here is Castile soap, an ...

Once you nail your formulas, though, get ready for a DIY cleaning spree featuring the new golden child of your under-sink stash: Castile soap. Castile soap gets its name from Castile, Spain ...