boiling

The term "boiling" can refer to cooking in liquid, being angry, or violent motion. In soapmaking, the "boiling process" is a traditional method where fats or oils react with a hot caustic alkali solution, like sodium hydroxide, to create soap and glycerin. This process, also known as saponification, involves heating the mixture with steam. After boiling, salt is added to separate the glycerin from the soap. Further steps refine the soap into a pure form. While still used, this batch process is time-consuming and has largely been replaced by continuous methods. Other methods, like the cold and semiboiled processes, involve less or no boiling and are simpler for small-scale production.12345