It took considerably longer for the invention to reach northern Europe; the Celts are credited with introducing soap to Britain in 1000 CE. Although the Arabs used animal fat for their soaps, the ...

The soap is made with only olive oil, baking soda, and water, which are cooked overnight in a large stainless steel pot. When the soap is ready, the hot liquid ... for its pure castile soap.

Like many other everyday foods, the price of olive oil has shot up in ... choose a cooking oil that's unrefined and labelled "virgin", "extra virgin" or "cold-pressed". Refined oils "have been ...