Leaf Lard. Never heard of it.
Leaf lard is the highest grade of lard. All lard is rendered pork fat; the term is usually used to refer to rendered pork fat suitable for cooking. Leaf lard specifically comes from the visceral, or soft, fat from around the kidneys and loin of the pig. As such, it has a very soft, super spreadable consistency at room temperature.
The lard sold in blocks in most stores, by contrast, is rendered from fat from all over the pig and is treated in a variety of ways, including hydrogenation, to make the lard shelf-stable, deodorized, and keep it solid at room temperature.
How to Use Leaf Lard
Like all types of lard, leaf lard has a high smoking point, making it an excellent choice for frying, pan-searing, and even grilling.
Also, while leaf lard doesn’t have the porky flavor of caul fat, it does have a gentle back-note of subtle, gentle meatiness that hydrogenated lard lacks. So it’s a good choice when you want that high smoking point, but you don’t want the final product to taste like pork.