Castile soap has existed for centuries. It is as popular in Spain as Marseille soap in France. Back then, the soap was made from animal grease. Now, the ‘Castille’ region produces its soaps from 100% olive oil. With little foam and with its soft properties, Castile soap was very quickly adopted and reserved for the elite, notably for the Spanish royal family
In order to make Castile soap at the comfort of your home, follow this recipe.