The process involves extracting pure fat from fatty tissues of a pig, typically back fat or leaf lard. This is achieved through heat, separating the rendered product from any remaining connective tissue and impurities. The result is a stable, flavorful cooking medium. The extracted fat can be used for cooking purposes.
The rendered fat offers notable benefits. It boasts a high smoke point, making it ideal for high-heat cooking methods. It also imparts a distinctive flavor profile to dishes, adding richness and depth. Historically, it served as a primary cooking fat source and a crucial ingredient in preserving foods before modern refrigeration techniques became widespread.